Modulation light source, image display apparatus including...

Details Modulation light source, image display apparatus including... Modulation light source, image display apparatus including...

2008-05-20

2008-05-20

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Nonlinear device

C372S022000, C372S026000, C372S096000

Reexamination Certificate

active

10579828

ABSTRACT:
A modulation light source capable of maintaining thermal stability of a gain part is provided. A modulation light source includes a DBR laser having a DBR part, a phase part and a gain part, a light wavelength conversion device that receives a fundamental wave from the DBR laser and from which an SHG light is emitted, and a control means for controlling the DBR laser. A substantially constant current is supplied to the gain part for a modulation time period of a PWM signal. At least one of the DBR part and the phase part is controlled for modulation using a current based on the PWM signal.

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Y. Kitaoka, et al., “Wavelength Stabilization of a Distributed Bragg Reflector Laser Diode by Use of Complementary Current Injection”, Optics Letters, vol. 28, No. 11, Jun. 1, 2003, pp. 914-916.

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