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Title: Fast wavelength tuning techniques for external cavity lasers

Patent ·
OSTI ID:1013392

An apparatus comprising a laser source configured to emit a light beam along a first path, an optical beam steering component configured to steer the light beam from the first path to a second path at an angle to the first path, and a diffraction grating configured to reflect back at least a portion of the light beam along the second path, wherein the angle determines an external cavity length. Included is an apparatus comprising a laser source configured to emit a light beam along a first path, a beam steering component configured to redirect the light beam to a second path at an angle to the first path, wherein the optical beam steering component is configured to change the angle at a rate of at least about one Kilohertz, and a diffraction grating configured to reflect back at least a portion of the light beam along the second path.

Research Organization:
Aerodyne Research Inc
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-06ER86264
Assignee:
William Marsh Rice University (Houston, TX)
Patent Number(s):
7,869,474
Application Number:
12/349,839
OSTI ID:
1013392
Country of Publication:
United States
Language:
English

References (3)

Continuous-wave operation of a broadly tunable thermoelectrically cooled external cavity quantum-cascade laser journal January 2005
Widely tunable mode-hop free external cavity quantum cascade laser for high resolution spectroscopic applications journal September 2005
Sensitive absorption spectroscopy with a room-temperature distributed-feedback quantum-cascade laser journal January 1998

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