Re: question about laser

Posted by Craig Brideau on
URL: http://confocal-microscopy-list.275.s1.nabble.com/question-about-laser-tp2424346p2424735.html

Ah, just realized I misunderstood your question.  You just need a laser line between 380 and 400.  Your best bet there would be to get a high-powered IR diode laser and use a crystal to double it.  A diode laser at 780nm doubled would give you 390nm.

Craig

On Wed, Mar 4, 2009 at 11:49 AM, Craig Brideau <[hidden email]> wrote:

A CW laser is by definition narrowband; there's no way you can have one with 20nm spectral bandwidth.  The only thing I can think of off hand that would give you the spectral range you are looking for is an LED.  The only other alternative would be something like a supercontinuum (or so-called 'white' laser) but that emits over a huge range and would be overkill.  I'd recommend trying to find a really powerful LED in that range, or even a bunch of lower-powered LEDs bundled into an array.

Craig

On Wed, Mar 4, 2009 at 10:43 AM, <[hidden email]> wrote:

Hi everyone,

We are looking for a coherent (or continuous wave) laser ranging from 380nm to 400nm. So far we haven't found anything impressive. Does anyone know any laser between that range? Thanks a lot!

Yue