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Office of Scientific and Technical Information
 

Chemical detection and laser wavelength stabilization employing spectroscopic absorption via laser compliance voltage sensing

Patent ·
OSTI ID:1234485
;

Systems and methods are disclosed that provide a direct indication of the presence and concentration of an analyte within the external cavity of a laser device that employ the compliance voltage across the laser device. The systems can provide stabilization of the laser wavelength. The systems and methods can obviate the need for an external optical detector, an external gas cell, or other sensing region and reduce the complexity and size of the sensing configuration.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
Assignee:
BATTELLE MEMORIAL INSTITUTE (Richland, WA)
Patent Number(s):
9,236,709
Application Number:
14/153,853
OSTI ID:
1234485
Country of Publication:
United States
Language:
English

References (12)

Self-coupled optical pickup journal April 1976
Measurements of the α factor of a distributed-feedback quantum cascade laser by an optical feedback self-mixing technique journal January 2006
Terahertz imaging through self-mixing in a quantum cascade laser journal January 2011
Intra-cavity absorption spectroscopy with narrow-ridge microfluidic quantum cascade lasers journal January 2007
Simultaneous laser-diode emission and detection for fiber-optic sensor applications journal January 1995
Intracavity laser absorption spectroscopy using mid-IR quantum cascade laser conference May 2011
Infrared intracavity laser absorption spectrometer conference April 2010
Self-mixing interferometry with a terahertz Quantum Cascade Laser: Feedback induced voltage signal conference December 2010
Voltage change across the self-coupled semiconductor laser journal July 1981
Demonstration of a self-mixing displacement sensor based on terahertz quantum cascade lasers journal August 2011
Quantum-cascade-laser structures as photodetectors journal October 2002
Intracavity sensing via compliance voltage in an external cavity quantum cascade laser journal January 2012

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