Frequency Doubled

[Sarah Kefayati]

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Hello all,

I appreciate if any one could help me with my question.
How can I get the frequency doubled beam from Ti-sapphire laser and
what range of wavelength do I have for the frequency doubled
Ti-sapphire beam?

Regards
Sarah

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Sarah,

Del Mar Photonics offers Second Harmonic Generator Units compartble with
fs Ti:Sapphire laser:
http://www.dmphotonics.com/wavelength%20conversion%20brochure%20web.pdf
For 700 - 1000 nm fundamental you will get 350 - 500 nm in second harmonic.

Or, alternatively you can use nonlinear crystal : BBO, angle tuning,
available from many sources, for example at http://www.greyhawkoptics.com/

Regards,
Sergey

Sarah Kefayati wrote:

> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Hello all,
>
> I appreciate if any one could help me with my question.
> How can I get the frequency doubled beam from Ti-sapphire laser and
> what range of wavelength do I have for the frequency doubled
> Ti-sapphire beam?
>
> Regards
> Sarah
>
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> This message was checked by NOD32 antivirus system.
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[Craig Brideau]

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal The cut of the crystal will dictate the bandwidth it will support, but it's usually a fairly wide range.  BBO or KTP generally work.  There are a fair number of crystal sellers who can help you choose the right material and crystal cleave.  Generally once you have the right crystal, you have to align it with the polarization of the laser, then rotate the crystal along the axis of polarization.  When the crystal is at the optimal angle you will have the strongest conversion to the doubled frequency.  It's surprisingly easy to set up if you have control over your laser's polarization with something like a half-wave plate, and a proper rotation mount to turn the crystal with.  I recommend something with a coarse or moderate micrometer for the rotation adjustment.  It's somewhat sensitive, so just turning the crystal by hand is tricky, but if you have a micrometer or basic gear drive it's easy.

Good luck!

Craig

On Tue, May 6, 2008 at 4:49 PM, Sarah Kefayati <[hidden email]> wrote:

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Hello all,

I appreciate if any one could help me with my question.
How can I get the frequency doubled beam from Ti-sapphire laser and
what range of wavelength do I have for the frequency doubled
Ti-sapphire beam?

Regards
Sarah