Ring cavity surface emitting quantum cascade laser with a near Gaussian beam profile

2015 ◽  
Author(s):  
Pedro N. Figueiredo ◽  
Andrey Muraviev ◽  
Robert E. Peale
Keyword(s):  
Gaussian Beam ◽  
Quantum Cascade Laser ◽  
Ring Cavity ◽  
Beam Profile ◽  
Cavity Surface ◽  
Quantum Cascade

scholarly journals Application of a ring cavity surface emitting quantum cascade laser (RCSE-QCL) on the measurement of H_2S in a CH_4 matrix for process analytics

2016 ◽  
Vol 24 (6) ◽  
pp. 6572 ◽  
Author(s):  
Harald Moser ◽  
Andreas Genner ◽  
Johannes Ofner ◽  
C. Schwarzer ◽  
Gottfried Strasser ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Ring Cavity ◽  
Cavity Surface ◽  
Process Analytics ◽  
Quantum Cascade

Two Dimensional Integration of Ring Cavity Surface Emitting Quantum Cascade Lasers

2011 ◽  
Author(s):  
Clemens Schwarzer ◽  
Elvis Mujagić ◽  
Tobias Zederbauer ◽  
Hermann Detz ◽  
Yu Yao ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Ring Cavity ◽  
Cavity Surface ◽  
Two Dimensional ◽  
Quantum Cascade ◽  
Cascade Lasers

scholarly journals A Quantum Cascade Laser–Based Reflectometer for On-Orbit Blackbody Cavity Monitoring

2009 ◽  
Vol 26 (8) ◽  
pp. 1596-1604 ◽  
Author(s):  
P. Jonathan Gero ◽  
John A. Dykema ◽  
James G. Anderson
Keyword(s):  
Quantum Cascade Laser ◽  
Single Mode ◽  
Thermal Infrared ◽  
Low Earth Orbit ◽  
International Standards ◽  
Optical Systems ◽  
Future Climate Change ◽  
Cavity Surface ◽  
Quantum Cascade ◽  
Blackbody Cavity

Abstract Satellite measurements pinned to international standards are needed to monitor the earth’s climate, quantify human influence thereon, and test forecasts of future climate change. Credible observations require that measurement uncertainties be evaluated on orbit during a mission’s operational lifetime. The most accurate spaceborne measurements of thermal infrared radiance are achieved with blackbody calibration. The physical properties of blackbody cavity surface coatings are known to change upon extended exposure to the low earth orbit environment. Any such drift must be quantified to continue correctly calibrating observed radiance on orbit. A method is presented to diagnose the effective emissivity of a blackbody cavity in situ using a quantum cascade laser (QCL)-based reflectometer. QCLs provide high-power single-mode output in the thermal infrared and have small mechanical footprints that facilitate integration into existing optical systems. The laser reflectivity in a test blackbody cavity was measured to be 9.22 × 10−4 with an uncertainty of 8.9 × 10−5, which is equivalent to a detection limit of 3 mK in the error in radiance temperature for a calibration blackbody (at 330 K and 1000 cm−1) resulting from cavity emissivity drift. These results provide the experimental foundation for this technology to be implemented on satellite instruments and thus eliminate a key time-dependent systematic error from future measurements on orbit.

scholarly journals Time-resolved spectral characterization of ring cavity surface emitting and ridge-type distributed feedback quantum cascade lasers by step-scan FT-IR spectroscopy

2014 ◽  
Vol 22 (3) ◽  
pp. 2656 ◽  
Author(s):  
Markus Brandstetter ◽  
Andreas Genner ◽  
Clemens Schwarzer ◽  
Elvis Mujagic ◽  
Gottfried Strasser ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Ring Cavity ◽  
Distributed Feedback ◽  
Cavity Surface ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Ft Ir ◽  
Cascade Lasers ◽  
Ft Ir Spectroscopy

Substrate Emission of Ring Cavity Surface Emitting Quantum Cascade Lasers

2012 ◽  
Author(s):  
C. Schwarzer ◽  
E. Mujagic ◽  
W. Schrenk ◽  
J. Chen ◽  
C. Gmachl ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Ring Cavity ◽  
Cavity Surface ◽  
Quantum Cascade ◽  
Cascade Lasers

Coherent coupling of ring cavity surface emitting quantum cascade lasers

2010 ◽  
Vol 97 (7) ◽  
pp. 071103 ◽  
Author(s):  
Clemens Schwarzer ◽  
Elvis Mujagić ◽  
Yu Yao ◽  
Werner Schrenk ◽  
Jianxin Chen ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Ring Cavity ◽  
Cavity Surface ◽  
Quantum Cascade ◽  
Coherent Coupling ◽  
Cascade Lasers

scholarly journals Continuous wave room temperature external ring cavity quantum cascade laser

2015 ◽  
Vol 106 (26) ◽  
pp. 261102 ◽  
Author(s):  
D. G. Revin ◽  
M. Hemingway ◽  
D. Vaitiekus ◽  
J. W. Cockburn ◽  
N. Hempler ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Continuous Wave ◽  
Ring Cavity ◽  
External Ring ◽  
Quantum Cascade

Continuous Wave Room Temperature External Ring Cavity Quantum Cascade Laser

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
M. Hemingway ◽  
D. Vaitiekus ◽  
J.W. Cockburn ◽  
N. Hempler ◽  
G.T. Maker ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Continuous Wave ◽  
Ring Cavity ◽  
External Ring ◽  
Quantum Cascade

2D patch antenna array on a double metal quantum cascade laser with >90% coupling to a Gaussian beam and selectable facet transparency at 19  THz

2016 ◽  
Vol 41 (19) ◽  
pp. 4590 ◽  
Author(s):  
Matthias Justen ◽  
Christopher Bonzon ◽  
Keita Ohtani ◽  
Mathias Beck ◽  
Urs Graf ◽  
...  
Keyword(s):  
Gaussian Beam ◽  
Antenna Array ◽  
Quantum Cascade Laser ◽  
Patch Antenna ◽  
Quantum Cascade
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