I'm Looking for Yellow Laser Diode Source
Dennis Janzen
Wavelength should be near 590 nm.
If that wavelength is not yet available in diodes, are there other types low
cost CW lasers around 590 nm being made?
DJ
KegBot
I've never heard of yellow laser diodes. However helium-neon lasers
can ge had at 594 nm. I got a bare tube (~1.9 mw) with no
powersupply for $170 off Ebay.
Sam Goldwasser
No direct injection laser diodes near 590 nm. Closest is still 635 nm.
You might get that down by supercooling but probably not to 590 nm in any
useful device.
Not too many other options either.
HeNe yellow 594 nm.
Coper vapor 578 nm.
Almost anything else is a complex frequency conversion process.
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Art
source: 514nm argon line. Not yellow, though - looks more orange/red,
but can be tuned to the yellow region.
On Mon, 3 Mar 2003 19:17:47 -0500, "Dennis Janzen"
<dwja...@starpower.net> wrote:
cad232
> I need a supply of yellow laser diodes for manufacturing a new device.
> Wavelength should be near 590 nm.
If you only want the beam to appear yellow to the human eye, you
might get that by combining a red and green laser beam. The human eye
really only detects 3 colors, red green and blue. True yellow light
triggers both the red and green receptors. So, you can fake the eye
out by using red and green light. [it's been a long time since I
studied this stuff, so I might not have the color mixing right, but
the basic pricipal is correct]
Joe
Dennis Janzen
Since I first posted my request I have spoken to several manufacturers about
prospects of a yellow diode laser in the future. One company's
representative suggested to me that one would be developed in the near
future. However, their projected cost is prohibitive for my application
(o.k. for prototyping though). For now I will use a 635 nm diode. These are
reasonably priced (less than $70). The yellow "of the future" looks like a
kilobucks type of device until there is a large commercial application.
The He-Ne yellow at JDR Uniphase looks a little more attractive now, but is
awfully large (physically).
"cad232" <cadc...@yahoo.com> wrote in message
news:f376f939.03030...@posting.google.com...
Sam Goldwasser
> Apparent color won't do what I want. Thanks for trying.
>
> Since I first posted my request I have spoken to several manufacturers about
> prospects of a yellow diode laser in the future. One company's
> representative suggested to me that one would be developed in the near
> future. However, their projected cost is prohibitive for my application
> (o.k. for prototyping though). For now I will use a 635 nm diode. These are
> reasonably priced (less than $70). The yellow "of the future" looks like a
> kilobucks type of device until there is a large commercial application.
That's optimistic.
I don't know of any large demand for yellow diode lasers and the development
cost is likely to be in the megabucks range if not larger.
> The He-Ne yellow at JDR Uniphase looks a little more attractive now, but is
> awfully large (physically).
How much power do you need? There are some relatively compact (as these
things go) yellow HeNe lasers in the 0.5 mW range (Melles Griot).
billk...@gmail.com
> "Dennis Janzen" <dwja...@starpower.net> writes:
> We have the DPSS 575nm at the moment, power range only 15-24mW.
Freeman