Wavelength and intensity stabilized laser diode and...

Details Wavelength and intensity stabilized laser diode and... Wavelength and intensity stabilized laser diode and...

2007-10-15

2009-10-20

Rodriguez, Armando (Department: 2828)

Coherent light generators

Optical fiber laser

C372S029011, C372S034000, C372S038020

Reexamination Certificate

active

07606273

ABSTRACT:
An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source stable in both spectrum and intensity, in conjunction with automatic power control wherein the feedback loop accurately reflects the true drift in the output power. Moreover, the pump efficiency is optimized and the optical noise is minimized by adjusting the diode operation temperature such that the pump wavelength coincides with the absorption peak of the gain medium. By internally or externally modulating the amplitude of the drive current, the pump diode(s) operate in pulsed mode with controllable shape, width, repetition rate, and pulse-to-pulse intervals, which enables essentially constant optical energy produced from each pulse of the solid-state laser in high repetition rates with variable pulse-to-pulse intervals.

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