Electronic device and light emission control method for...

Details Electronic device and light emission control method for... Electronic device and light emission control method for...

2011-06-14

2011-06-14

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S287000

Reexamination Certificate

active

07960918

ABSTRACT:
An electronic device, and a corresponding light emission control method for the electronic device, emit light by utilizing recombination of electrons and holes the device and method input a pulse-shaped driving signal having a duty ratio higher than or equal to 0.7 and lower than 1.0 and thereby causing light to be emitted intermittently. When an electron density is denoted by n, a hole density by p, a thermal velocity of electrons by Vth:n, a thermal velocity of holes by Vth:p, an electron capture cross section of a defect level by σn, a hole capture cross section of a defect level by σp, and a pulse width of the driving signal by W, the input driving signal has a pulse width W that satisfies W<1/{n·vth:n·σn·p·vth:p·σp/(n·vth:n·σn+p·vth:p·σp)}.

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“Picosecond Pulsed Diode Laser Driver,” Pulsed Light Sources, http://www.picoquant.com/products/pd1800b/pd1800b.htm.

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