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100 - 150mW DPSS 561nm Laser

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Hiroyuki Hakozaki

100 - 150mW DPSS 561nm Laser

Dear Confocal list members,
This isn't really confocal related question but hope some people on
this list has experience with DPSS 561nm laser.

I'm considering to purchase DPSS 561nm laser - 100mW or 150mW for my
microscope application. I looked at Coherent, Spectra Physics,
CrystaLaser and Cobolt.

Since this kind of laser is new to the market, I would like to hear
real experience with this laser.

If you have experience with this laser, can you share your opinion?

Best Regards,

Hiro.
=======================================
Hiroyuki Hakozaki

National Center for Microscopy & Imaging Research
University of California San Diego
=======================================

Craig Brideau

Re: 100 - 150mW DPSS 561nm Laser

561 has been around for a while. Just make sure the output mode is
good and the laser is power stabilized (check RMS noise on the
output). Are you planing on fiber coupling it or steering the beam
with mirrors (freespace)?

Craig

On Tue, Oct 13, 2009 at 4:28 PM, Hiroyuki Hakozaki
<[hidden email]> wrote:

> Dear Confocal list members,
> This isn't really confocal related question but hope some people on
> this list has experience with DPSS 561nm laser.
>
> I'm considering to purchase DPSS 561nm laser - 100mW or 150mW for my
> microscope application. I looked at Coherent, Spectra Physics,
> CrystaLaser and Cobolt.
>
> Since this kind of laser is new to the market, I would like to hear
> real experience with this laser.
>
> If you have experience with this laser, can you share your opinion?
>
> Best Regards,
>
> Hiro.
> =======================================
> Hiroyuki Hakozaki
>
> National Center for Microscopy & Imaging Research
> University of California San Diego
> =======================================
>

Hiroyuki Hakozaki

Re: 100 - 150mW DPSS 561nm Laser

Hi Craig,
Thank you for your information. As for specification wise, all of them
looks fine.

I'm planing to use fiber coupling.

Hiro.

> 561 has been around for a while. Just make sure the output mode is
> good and the laser is power stabilized (check RMS noise on the
> output). Are you planing on fiber coupling it or steering the beam
> with mirrors (freespace)?
>
> Craig
>
>
> On Tue, Oct 13, 2009 at 4:28 PM, Hiroyuki Hakozaki
> <[hidden email]> wrote:
> > Dear Confocal list members,
> > ?This isn't really confocal related question but hope some people on
> > this list has experience with DPSS 561nm laser.
> >
> > ?I'm considering to purchase DPSS 561nm laser - 100mW or 150mW for my
> > microscope application. I looked at Coherent, Spectra Physics,
> > CrystaLaser and Cobolt.
> >
> > ?Since this kind of laser is new to the market, I would like to hear
> > real experience with this laser.
> >
> > ?If you have experience with this laser, can you share your opinion?
> >
> > Best Regards,
> >
> > Hiro.
> > =======================================
> > Hiroyuki Hakozaki
> >
> > National Center for Microscopy & Imaging Research
> > University of California San Diego
> > =======================================
> >

Alberto Diaspro

Re: 100 - 150mW DPSS 561nm Laser

In reply to this post by Hiroyuki Hakozaki

Friends
I am intersted as well
Ciao
ALby
On Oct 14, 2009, at 12:28 AM, Hiroyuki Hakozaki wrote:

----------------------------------------
Alberto Diaspro
Head, Nanophysics Unit
Senior Scientist
The Italian Institute of Technology -IIT
Via Morego, 30
16163 - Genova (Italy)
phone: +39 010 71781503
mobile: +393666719968
fax: +39 010 720321
http://www.iit.it
[hidden email]

Professor of Applied Physics
Department of Physics
University of Genova
Via Dodecaneso, 33
16146 Genova - Italy
tel. +39 010 353 6426
fax. +39 010 314218
http://www.lambs.it
[hidden email]
-------------------------------------------------------

Alberto Diaspro

Re: 100 - 150mW DPSS 561nm Laser

In reply to this post by Craig Brideau

Data sheet look good for the Coherent one.

On Oct 14, 2009, at 2:00 AM, Craig Brideau wrote:

> 561 has been around for a while. Just make sure the output mode is
> good and the laser is power stabilized (check RMS noise on the
> output). Are you planing on fiber coupling it or steering the beam
> with mirrors (freespace)?
>
> Craig
>
>
> On Tue, Oct 13, 2009 at 4:28 PM, Hiroyuki Hakozaki
> <[hidden email]> wrote:
>> Dear Confocal list members,
>> This isn't really confocal related question but hope some people on
>> this list has experience with DPSS 561nm laser.
>>
>> I'm considering to purchase DPSS 561nm laser - 100mW or 150mW for my
>> microscope application. I looked at Coherent, Spectra Physics,
>> CrystaLaser and Cobolt.
>>
>> Since this kind of laser is new to the market, I would like to hear
>> real experience with this laser.
>>
>> If you have experience with this laser, can you share your opinion?
>>
>> Best Regards,
>>
>> Hiro.
>> =======================================
>> Hiroyuki Hakozaki
>>
>> National Center for Microscopy & Imaging Research
>> University of California San Diego
>> =======================================
>>

Csúcs Gábor

Re: 100 - 150mW DPSS 561nm Laser

In reply to this post by Hiroyuki Hakozaki

We have a 100mW laser from Cobolt for approximately 1 year now. We use
it on a spinning disk system and it works fine (although its power was
never really 100 mW, rather 90-95).

Cheers Gabor

Craig Brideau

Re: 100 - 150mW DPSS 561nm Laser

In reply to this post by Hiroyuki Hakozaki

Single-mode fiber coupling tends to clean up the mode output of your
laser as long as it is done correctly (it is a form of spatial
filtering). You should have a clean gaussian mode out of the
single-mode fiber tip. The next parameter is the power stability of
the laser. You need to know the RMS noise in the power output of the
laser, particularly the noise at frequencies similar to your
image/pixel acquisition rate. A 'decent' laser has RMS noise <5% and
will be usable for most applications. A 'good' laser is <1-2%.
Unless you are trying photobleaching or the like maximum power is
seldom an issue; for most people 100mW is overkill.

Craig

2009/10/13 Hiroyuki Hakozaki <[hidden email]>:

> Hi Craig,
> Thank you for your information. As for specification wise, all of them
> looks fine.
>
> I'm planing to use fiber coupling.
>
> Hiro.
>
>> 561 has been around for a while. Just make sure the output mode is
>> good and the laser is power stabilized (check RMS noise on the
>> output). Are you planing on fiber coupling it or steering the beam
>> with mirrors (freespace)?
>>
>> Craig
>>
>>
>> On Tue, Oct 13, 2009 at 4:28 PM, Hiroyuki Hakozaki
>> <[hidden email]> wrote:
>> > Dear Confocal list members,
>> > ?This isn't really confocal related question but hope some people on
>> > this list has experience with DPSS 561nm laser.
>> >
>> > ?I'm considering to purchase DPSS 561nm laser - 100mW or 150mW for my
>> > microscope application. I looked at Coherent, Spectra Physics,
>> > CrystaLaser and Cobolt.
>> >
>> > ?Since this kind of laser is new to the market, I would like to hear
>> > real experience with this laser.
>> >
>> > ?If you have experience with this laser, can you share your opinion?
>> >
>> > Best Regards,
>> >
>> > Hiro.
>> > =======================================
>> > Hiroyuki Hakozaki
>> >
>> > National Center for Microscopy & Imaging Research
>> > University of California San Diego
>> > =======================================
>> >
>

Hiroyuki Hakozaki

Re: 100 - 150mW DPSS 561nm Laser

In reply to this post by Hiroyuki Hakozaki

Dear All,
Thank you for your input about DPSS 561nm laser. I also received
private responses from my friends and would like to summarize here.

One of my friend have very good experience include support with
Coherent 100mW which he has more than one.

I also heard good and bad experience with Cobolt.

I didn't hear anything about CrystaLaser and Spectra Physics. So no
comment about these company.

Because of my friend have good experience with Coherent, I will go with
Coherent.

Thank you again for your feedback.

Best Regards,

Hiro.