Frequency scanning pulsed laser having synchronously set...

Details Frequency scanning pulsed laser having synchronously set... Frequency scanning pulsed laser having synchronously set...

2007-07-24

2007-07-24

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

Controlling current or voltage to laser

C372S029015, C372S038020

Reexamination Certificate

active

10284781

ABSTRACT:
The present invention provides methods and apparatus for flexible and reproducible control of quantum cascade laser frequency scans having short (nanosecond) pulse excitations. In accordance with a preferred embodiment of the invention, a method of digital frequency control for pulsed quantum cascade lasers includes digitally synthesizing a sub-threshold current, converting the sub-threshold current to analog form, and generating laser pulses. Preferably, the sub-threshold current is synchronized to the laser pulses.

REFERENCES:
patent: 4166985 (1979-09-01), White et al.
patent: 5019769 (1991-05-01), Levinson
patent: 5936987 (1999-08-01), Ohishi et al.
patent: 6037832 (2000-03-01), Kaminishi
patent: 6400744 (2002-06-01), Capasso et al.
K. Namjou et al.;Sensitive absorption spectroscopy with a room-temperature distributed-feedback quantum-cascade laser; Optic Letters, vol. 23, No. 3, Feb. 1, 1998; (3 p.).
D. D. Nelson et al.;Sub-part-per-billion detection of nitric oxide in air using a thermoelectrically cooled mid-infrared quantum cascade laser spectrometer; Appl. Phys. B 75, 2002; (pp. 343-350).

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