Optoelectronic device
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Dear List, can anybody give me an advice what the following opto-eletronic device is for? https://imgur.com/a/AhnXyb8 best Andreas Bahmer University Frankfurt |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Andreas, I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. Why is it of interest? Best regards, Gerhard Dr. Gerhard Holst Head of Research & Science Business Development +49 (0) 9441 2005 570 PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 Sitz der Gesellschaft / Registered Office: Kelheim -----Ursprüngliche Nachricht----- Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer Gesendet: Freitag, 2. Oktober 2020 09:05 An: [hidden email] Betreff: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Dear List, can anybody give me an advice what the following opto-eletronic device is for? https://imgur.com/a/AhnXyb8 best Andreas Bahmer University Frankfurt |
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In reply to this post by Andreas Bahmer
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** My guess is that it is a 4-quadrant position detector. Might help to know what it came from. Best regards --aryeh On 02/10/2020 10:04, Andreas Bahmer wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear List, > > can anybody give me an advice what the following opto-eletronic device is for? > > > https://imgur.com/a/AhnXyb8 > > > > best > Andreas Bahmer > University Frankfurt > . -- Aryeh Weiss Faculty of Engineering Bar Ilan University Ramat Gan 52900 Israel Ph: 972-3-5317638 FAX: 972-3-7384051 |
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In reply to this post by Gerhard Holst
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** HI It indeed looks like a 4 quadrant photodiode -can be used for measuring beam position and circularity. Don't the numbers on the can google to anything? Cheers Mark B. Cannell. Ph.D. FRSNZ FISHR Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 2/10/20, 8:28 AM, "Confocal Microscopy List on behalf of Gerhard Holst" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Andreas, I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. Why is it of interest? Best regards, Gerhard Dr. Gerhard Holst Head of Research & Science Business Development +49 (0) 9441 2005 570 PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 Sitz der Gesellschaft / Registered Office: Kelheim -----Ursprüngliche Nachricht----- Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer Gesendet: Freitag, 2. Oktober 2020 09:05 An: [hidden email] Betreff: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Dear List, can anybody give me an advice what the following opto-eletronic device is for? https://imgur.com/a/AhnXyb8 best Andreas Bahmer University Frankfurt |
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In reply to this post by Andreas Bahmer
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** I agree with Aryeh - this looks very much like a quadrant photodiode. Best regards, Beat At 09:04 02/10/2020, you wrote: >***** >To join, leave or search the confocal microscopy listserv, go to: >http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy >Post images on http://www.imgur.com and include the link in your posting. >***** > >Dear List, >Â >can anybody give me an advice what the following opto-eletronic device is for? >Â >Â >https://imgur.com/a/AhnXyb8 >Â >Â >Â >best >Andreas Bahmer >University Frankfurt |
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In reply to this post by Gerhard Holst
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Gerhard, thank you for the email. I found it in a setup which I demounted. So I was just curious what I can do with this. I am a recycler by heart. The most precious would be an avalance photodiode. However the splitting into 4 quadrants does not make sense then. best Andreas Gesendet: Freitag, 02. Oktober 2020 um 09:22 Uhr Von: "Gerhard Holst" <[hidden email]> An: [hidden email] Betreff: AW: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Hi Andreas, I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. Why is it of interest? Best regards, Gerhard Dr. Gerhard Holst Head of Research & Science Business Development +49 (0) 9441 2005 570 PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de[http://www.pco.de] Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 Sitz der Gesellschaft / Registered Office: Kelheim -----Ursprüngliche Nachricht----- Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer Gesendet: Freitag, 2. Oktober 2020 09:05 An: [hidden email] Betreff: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Dear List, can anybody give me an advice what the following opto-eletronic device is for? https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8] best Andreas Bahmer University Frankfurt |
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In reply to this post by Mark Cannell-2
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Thank you! But how can it measure circularity? Is it not too slow? best Andreas Gesendet: Freitag, 02. Oktober 2020 um 13:11 Uhr Von: "Mark Cannell" <[hidden email]> An: [hidden email] Betreff: Re: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** HI It indeed looks like a 4 quadrant photodiode -can be used for measuring beam position and circularity. Don't the numbers on the can google to anything? Cheers Mark B. Cannell. Ph.D. FRSNZ FISHR Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 2/10/20, 8:28 AM, "Confocal Microscopy List on behalf of Gerhard Holst" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Hi Andreas, I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. Why is it of interest? Best regards, Gerhard Dr. Gerhard Holst Head of Research & Science Business Development +49 (0) 9441 2005 570 PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de[http://www.pco.de] Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 Sitz der Gesellschaft / Registered Office: Kelheim -----Ursprüngliche Nachricht----- Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer Gesendet: Freitag, 2. Oktober 2020 09:05 An: [hidden email] Betreff: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Dear List, can anybody give me an advice what the following opto-eletronic device is for? https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8] best Andreas Bahmer University Frankfurt |
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In reply to this post by Andreas Bahmer
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Andreas, In 1980th similar 4-quadrant photodiodes were used in laser videodisc and CD players in order to generate the followings signals. 1. push-pull radial tracking signal: (S1+S2)-(S3+S4); 2. focus error signal in astigmatic method: (S1+S3)-(S2+S4) or S1xS3-S2xS4; 3. information signal: S1+S2+S3+S4. I think such photodiodes were also used for laser guidance. Best, Michael Shribak > On Oct 2, 2020, at 8:52:19 AM, Andreas Bahmer <[hidden email]> wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Hi Gerhard, > > thank you for the email. > I found it in a setup which I demounted. So I was just curious what I can do with this. I am a recycler by heart. The most precious would be an avalance photodiode. However the splitting into 4 quadrants does not make sense then. > > best > Andreas > > > > > Gesendet: Freitag, 02. Oktober 2020 um 09:22 Uhr > Von: "Gerhard Holst" <[hidden email]> > An: [hidden email] > Betreff: AW: Optoelectronic device > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. > ***** > > Hi Andreas, > > I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. > Why is it of interest? > > Best regards, > Gerhard > > > Dr. Gerhard Holst > Head of Research & Science > Business Development > +49 (0) 9441 2005 570 > > PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de[http://www.pco.de] > Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar > Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott > USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 > Sitz der Gesellschaft / Registered Office: Kelheim > > > -----Ursprüngliche Nachricht----- > Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer > Gesendet: Freitag, 2. Oktober 2020 09:05 > An: [hidden email] > Betreff: Optoelectronic device > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] > Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. > ***** > > Dear List, > > can anybody give me an advice what the following opto-eletronic device is for? > > > https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8] > > > > best > Andreas Bahmer > University Frankfurt |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Very interesting, thank you! Andreas Gesendet: Samstag, 03. Oktober 2020 um 03:00 Uhr Von: "Michael Shribak" <[hidden email]> An: [hidden email] Betreff: Re: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Hi Andreas, In 1980th similar 4-quadrant photodiodes were used in laser videodisc and CD players in order to generate the followings signals. 1. push-pull radial tracking signal: (S1+S2)-(S3+S4); 2. focus error signal in astigmatic method: (S1+S3)-(S2+S4) or S1xS3-S2xS4; 3. information signal: S1+S2+S3+S4. I think such photodiodes were also used for laser guidance. Best, Michael Shribak > On Oct 2, 2020, at 8:52:19 AM, Andreas Bahmer <[hidden email]> wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] > Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. > ***** > > Hi Gerhard, > > thank you for the email. > I found it in a setup which I demounted. So I was just curious what I can do with this. I am a recycler by heart. The most precious would be an avalance photodiode. However the splitting into 4 quadrants does not make sense then. > > best > Andreas > > > > > Gesendet: Freitag, 02. Oktober 2020 um 09:22 Uhr > Von: "Gerhard Holst" <[hidden email]> > An: [hidden email] > Betreff: AW: Optoelectronic device > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] > Post images on http://www.imgur.com[http://www.imgur.com][http://www.imgur.com[http://www.imgur.com]] and include the link in your posting. > ***** > > Hi Andreas, > > I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. > Why is it of interest? > > Best regards, > Gerhard > > > Dr. Gerhard Holst > Head of Research & Science > Business Development > +49 (0) 9441 2005 570 > > PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de[http://www.pco.de][http://www.pco.de[http://www.pco.de]] > Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar > Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott > USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 > Sitz der Gesellschaft / Registered Office: Kelheim > > > -----Ursprüngliche Nachricht----- > Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer > Gesendet: Freitag, 2. Oktober 2020 09:05 > An: [hidden email] > Betreff: Optoelectronic device > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy][http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy]] > Post images on http://www.imgur.com[http://www.imgur.com][http://www.imgur.com[http://www.imgur.com]] and include the link in your posting. > ***** > > Dear List, > > can anybody give me an advice what the following opto-eletronic device is for? > > > https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8][https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8]] > > > > best > Andreas Bahmer > University Frankfurt |
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In reply to this post by Michael Shribak
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Michael, https://imgur.com/a/2xqtVld That is what it is you are right, and it is extrem fast as there is no multiplexing. It reminds me on the principle of a photomultplier based "camera" with exactly this principle and therefore an extrem fast readout which was shown at the german bioimaging conference https://www.gerbi-gmb.de/tim2020 from the company https://www.photonscore.de/ (I am employed at university frankfurt, so no commercial interest). best Andreas Gesendet: Samstag, 03. Oktober 2020 um 03:00 Uhr Von: "Michael Shribak" <[hidden email]> An: [hidden email] Betreff: Re: Optoelectronic device ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. ***** Hi Andreas, In 1980th similar 4-quadrant photodiodes were used in laser videodisc and CD players in order to generate the followings signals. 1. push-pull radial tracking signal: (S1+S2)-(S3+S4); 2. focus error signal in astigmatic method: (S1+S3)-(S2+S4) or S1xS3-S2xS4; 3. information signal: S1+S2+S3+S4. I think such photodiodes were also used for laser guidance. Best, Michael Shribak > On Oct 2, 2020, at 8:52:19 AM, Andreas Bahmer <[hidden email]> wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] > Post images on http://www.imgur.com[http://www.imgur.com] and include the link in your posting. > ***** > > Hi Gerhard, > > thank you for the email. > I found it in a setup which I demounted. So I was just curious what I can do with this. I am a recycler by heart. The most precious would be an avalance photodiode. However the splitting into 4 quadrants does not make sense then. > > best > Andreas > > > > > Gesendet: Freitag, 02. Oktober 2020 um 09:22 Uhr > Von: "Gerhard Holst" <[hidden email]> > An: [hidden email] > Betreff: AW: Optoelectronic device > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy] > Post images on http://www.imgur.com[http://www.imgur.com][http://www.imgur.com[http://www.imgur.com]] and include the link in your posting. > ***** > > Hi Andreas, > > I don't know for sure, but it looks like either an avalanche photodiode or SPAD sensor or maybe, due to the 4 contacts, to a position sensitive photo-detector, but I have never seen it before. > Why is it of interest? > > Best regards, > Gerhard > > > Dr. Gerhard Holst > Head of Research & Science > Business Development > +49 (0) 9441 2005 570 > > PCO AG, Donaupark 11, 93309 Kelheim, Germany, www.pco.de[http://www.pco.de][http://www.pco.de[http://www.pco.de]] > Vorstand / Managing Board: Alexander Grünig, Luitpold Kaspar > Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Dr. Emil Ott > USt. ID-Nr. / VAT: DE128590843, Registergericht / Register Court: Amtsgericht Regensburg HRB 9157 > Sitz der Gesellschaft / Registered Office: Kelheim > > > -----Ursprüngliche Nachricht----- > Von: Confocal Microscopy List <[hidden email]> Im Auftrag von Andreas Bahmer > Gesendet: Freitag, 2. Oktober 2020 09:05 > An: [hidden email] > Betreff: Optoelectronic device > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy][http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy[http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy]] > Post images on http://www.imgur.com[http://www.imgur.com][http://www.imgur.com[http://www.imgur.com]] and include the link in your posting. > ***** > > Dear List, > > can anybody give me an advice what the following opto-eletronic device is for? > > > https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8][https://imgur.com/a/AhnXyb8[https://imgur.com/a/AhnXyb8]] > > > > best > Andreas Bahmer > University Frankfurt |
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