TY - JOUR
T1 - Tuning properties of mid-infrared fabry-pérot quantum cascade lasers for multiheterodyne spectroscopy
AU - Sterczewski, Lukasz A.
AU - Westberg, Jonas
AU - Wysocki, Gerard
N1 - Publisher Copyright:
© 2016 Photonics Society of Poland.
PY - 2016
Y1 - 2016
N2 - Injection current tuning properties of an 8.5μm Fabry-Pérot mid-infrared quantum cascade laser are evaluated by analyzing the mode-by-mode frequency tuning behavior with an identification of high-noise regimes in a delayed self-heterodyne experiment. We find that modes on the edges of the spectral envelope exhibit anomalous tuning coefficients compared to those in the center. Furthermore, the frequencies of individual modes are susceptible to parasitic etalons, likely causing laser frequency pulling. Despite the complicated tuning behavior, low phase-noise operating regimes exist, and are compatible with high resolution multiheterodyne spectroscopy of gases.
AB - Injection current tuning properties of an 8.5μm Fabry-Pérot mid-infrared quantum cascade laser are evaluated by analyzing the mode-by-mode frequency tuning behavior with an identification of high-noise regimes in a delayed self-heterodyne experiment. We find that modes on the edges of the spectral envelope exhibit anomalous tuning coefficients compared to those in the center. Furthermore, the frequencies of individual modes are susceptible to parasitic etalons, likely causing laser frequency pulling. Despite the complicated tuning behavior, low phase-noise operating regimes exist, and are compatible with high resolution multiheterodyne spectroscopy of gases.
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U2 - 10.4302/plp.2016.4.08
DO - 10.4302/plp.2016.4.08
M3 - Article
AN - SCOPUS:85008420070
SN - 2080-2242
VL - 8
SP - 113
EP - 115
JO - Photonics Letters of Poland
JF - Photonics Letters of Poland
IS - 4
ER -