- Sep 13, 2010
Actually, the diode is an IR pump diode (hence, Diode-pumped part of DPSS) that emits light through crystals that change the wavelength to be green (very very very terrible explanation). The efficiency of the green light (if it is a high quality laser) will only be about 20%. So a very good green laser that has an IR diode that is 2W will be about 400mW: since that laser isn't the highest quality out there, it makes sense that it would be a little less than 400mW (but still around that output). The blu-ray diode is much more efficient than a green laser, since it doesn't need the crystals.There's no way your laser can draw only .5 amps, could there be something wrong with your reading? Even O-like says these lasers are supposed to be in the 1-2A range, for example these are the specs for the 400mW Green:
Output Power >350mW
Pump diode 2.0W
Transverse Mode: TEM00
Operating Mode: CW
Operating Current 2A
Beam Diameter: 1.5mm(at aperture)
Beam Divergence: 1.5mRad
Duty Cycle: 100 seconds on, 60 seconds off
Power Source: 18650 lithium Batteries ,"+" towards tail cap
Operating Temp.: 10~ 35℃
Expected Lifetime: >5000 hours
Warranty: 6 Months (not included man-made broken
As you can see "Operating Current 2A", and my 405nm pulls around that same current, it fluctuates between 2.0 and 2.3, and sometimes reaches 2.6A.
My green however, pulls from 3-3.3A!
The 445 diodes don't use crystals so when you have the current at like 1.1A, it outputs ~1W. The blu-ray diodes have about the same efficiency as the 445 diodes.
That's what I got out of research on here: read posts 1 and 4 of the link: