Re: question about laser
Posted by
Mario-2 on
URL: http://confocal-microscopy-list.275.s1.nabble.com/question-about-laser-tp2424346p2424947.html
Re: question about laser
Speaking of which, whatever happened to the promised solid state
laser that is basically the same as the 405 nm but tuned to emit as
short as 385 nm? I may be a bit off, but the DAPI fluorescence
emission is about 7 times higher at 385 nm (~45% max) compared to 405
nm (~6% max).
Mario
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
--