Old 04-08-2014, 11:00 AM #1
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Default Very Ineffiicient energy transfer, still impressive to me

I have an Eton Microlink FR 160, and after seeing the vid where styropyro drives a tiny electric car that has a small pohotovoltaic cell with a 3W+ 445nm laser, I wondered how much power was needed to power my radio via laser, and if wavelength makes any difference. I tried it out with 1.5W of 445nm, .5W of 405nm, and 1W of 635nm, in that order.

In the vid, the radio is dead and off. I charge it for a few seconds, then turn it on. they seem to have trouble turning on the radio from dead when it is left on, but can maintain it's function once it is on, and can resume it's function if only removed briefly. very inefficient energy transfer, but even 500mW is enough to power a radio, and you have to figure the cell is likely less than 30% efficient

enjoy, may want to turn down your speakers



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501B BDR-209 16X 405nm 630mW @.52Ag lens
Host by Ehgemus NUBM44 450nm 6.8W @4.5A g lens
Host by Ehgemus M462 462nm 1.5W @1.2A g lens
Dominator NUBM07E 465nm 4.3W @3.5A g lens
L2P Nichi@ NDG4216 515nm 110mW @ .35A
501B by Blord osr@m PL520 520nm 95mW @.3A g lens
PL-E pro from Jetlasers nichi@ NDG7475 520nm 980mW, 730mW w/ 10X BE

Lasermax Genesis sight 532nm 5mW
RPL from Optotronics 532nm 450mW

Spartan from Dragonlasers 589nm 50mW
501B HL63133DG 638nm 210mW @.3A g lens
501B Ocl@ro HL63193MG 638nm 960mW @1.3A g lens

501B by Blord LPC 826 660nm 325mW @?A g lens
PL660 from Laserbtb 660nm 1020mW

LPM
DL matrix and fan transmission gratings

laser powers in sig are about 20 seconds into duty cycle, not peak powers

http://laserpointerforums.com/f39/co...her-94720.html

(I guess I am a vet now)
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