Laser coherence control using homogeneous linewidth broadening

Details Laser coherence control using homogeneous linewidth broadening Laser coherence control using homogeneous linewidth broadening

2007-10-09

2007-10-09

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Q-switch

C372S026000

Reexamination Certificate

active

10652429

ABSTRACT:
An apparatus and method for linewidth broadening applied to a laser that emits a light having an output frequency ν and an emission linewidth δE. The apparatus is equipped with an electro-optic modulator for intercepting the light and a noise generator for driving the electro-optic modulator with a radio-frequency (RF) noise signal spanning a frequency range selected to broaden the emission linewidth δEof the light passing through the electro-optic modulator to a broadened linewidth δB. The noise spectrum of the noise signal exhibits a continuous frequency range and can be flat or sloping. The range extends from low frequency ωLset below the emission linewidth δEof the light to a high frequency ωHset above the emission linewidth δEof the light. The electro-optic modulator can be selected from among many suitable devices including optical crystals. Further broadening can be achieved by employing one or more secondary EOMs operating in resonant or non-resonant modes. The lasers that benefit from the invention involve any type of inherently narrow bandwidth lasers operating in CW or pulsed modes.

REFERENCES:
patent: 3432770 (1969-03-01), Massey
patent: 4299484 (1981-11-01), Holzapfel
patent: 4841528 (1989-06-01), Sipes et al.
patent: 5189547 (1993-02-01), Dat et al.
patent: 5295209 (1994-03-01), Huber
patent: 5400417 (1995-03-01), Allie et al.
patent: 5434693 (1995-07-01), Tanaka et al.
patent: 5621744 (1997-04-01), Kikuchi et al.
patent: 5663822 (1997-09-01), Fee
patent: 5892607 (1999-04-01), Atlas
patent: 5917636 (1999-06-01), Wake et al.
patent: 6128030 (2000-10-01), Kikuchi et al.
patent: 6906309 (2005-06-01), Sayyah et al.
patent: 2002/0043618 (2002-04-01), Storz et al.
patent: 2002/0196509 (2002-12-01), Smilanski et al.
patent: 2004/0028414 (2004-02-01), Quesenberry et al.
patent: 0765046 (1992-11-01), None
patent: 2313674 (1996-09-01), None
patent: 04302011 (1992-12-01), None
R. Kowalski et al., “A frequency-modulated injection-locked diode laser for two-frequency generation,” Review of Scientific Instruments, vol. 72, No. 6, Jun. 2001.
Paul Feng et al., “Inexpensive diode laser microwave modulation for atom trapping,” Am. J. Phys. 63 (10), Oct. 1995.
M. J. Lim et al., “Improved design of a frequency-shifted feedback diode laser for optical pumping at high magnetic field,” Optics Communications 147 (1998) 99-102, Feb. 1, 1998.
A. P. Willis et al., “External cavity laser diodes with frequency-shifted feedback,” Optics Communciations 116 (1995) 87-93, Apr. 15, 1995.
P. I. Richter et al., “Diode lasers in external cavities with frequency-shifted feedback,” Optics Communications 85 (1991) 414-418.
F. V. Kowalski et al., “Broadband continuous-wave laser,” Optics Letters/vol. 13, No. 8/ Aug. 1988.
A. Dunbar et al., “Extended Athena alignment performance and application for the 100 NM technology node,” ASML (Netherlands), Proceedings of SPIE, vol. 4344, Metrology, Inspection, and Process Control for Microlithography XV, paper #4344-85 (2001).

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