richard@pegasus.com (Richard Foulk) (11/04/90)
>>2. Discouraged, I was prowling around in a catalog that had been packaged >>with the magazine, and found some other company selling 2mw visible red >>laser diodes for $19.95. Hmmm. I dont know a whole lot about laser diodes. >>Does the thing just spontaneously start lasing when you exceed the I(th) >>, or do you have to give them high current pulses, like the older IR >>laser diodes? (As near as I could tell, the RE thing was just a constant >>current supplier with a feedback loop through the photodiode integral to >>the laser diode.) If thats the case, I think Id just get one and start messing >>around... > >The less expensive laser diodes operate at 780nm versus the expensive >which operate at 665nm. The 665nm is a much more visabe red beam. The distressing thing about the Radio Electronics (10/90) construction article is that it didn't state what the wavelength of the Toshiba TOLD-9200 laser diode was. All they say is that it's visible. -- Richard Foulk richard@pegasus.com