We are planning to stabilize the laser (Solid state diode laser) using PDH technique. Our required FSR is 1GHz and finesse is around 2000. So we are looking for dielectric mirrors in reflectivity of the order of 99.98.
Try CRD Optics, Inc. on the link below
http://www.crd-optics.com/crd-mirrors-ir.html
Hope this helps
Best,
Rad
Try Thorlabs at http://www.thorlabs.com, good quality but a narrower selection
or
Edmund Optics: http://www.edmundoptics.com, lower cost and large selection
And there are many more vendors. Search Google for "dielectric mirror".
I hope this helps!
Here you can customize your lenses and coating:
http://www.laseroptik.de/loop/app/Configurator.asp?page=1
Thy have pretty big choice and I am sure you can satisfy even very fancy requirements. We have ordered from them 1inch concave mirrors with reflectivity above 98% for 780nm (for cavity).
That's pretty specific, I don't think you can do that using the standard online design tools that some companies offer. Actually, the high reflectivity and the wide range are two contradicting parameters (the higher the reflectivity, the narrower the wavelength range). I'm not an expert in this, but 100 nm and 99.98% to me sounds pretty much at the edge of what you can do. Maybe, one can use non-standard coating materials with large \Delta n between H and L. Contact Layertec (www.layertec.com) and ask them to design that for you.
Try from Edmond, USA
I found their mirrors very good and economical as well.
Aslam
Thank you. I contacted several companies and they offered the required mirrors with ROC 1m. but I need ROC of 150mm.
Hello,
try www.eksmaoptics.com
they almost always accept orders for non-stock optics and do things really well. I think they should have glass base with such curvature. Coatings needed. This may take few weeks because they have quite a lot of orders. But it definitely worth to contact them by e-mail.
You can buy through any big optics comapny liek Melleos great, Thore lab, Edmun, orila optcis and many more.
Muhammed, To obtain R>=99.98 on mirror, super polishing the substrate and IBS coating are essential, which is characterized by surface roughness of less than 1 A rms. Try REO ! They offers mirrors with r.o.c > 20mm. http://www.reoinc.com/optics-uv-vis-nir/mirros1 Shigeo
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