Continuous Wave Operation Of Quantum Cascade Lasers With Frequency-Shifted Feedback

Abstract

Operation of continuous wave quantum cascade lasers with a frequency-shifted feedback provided by an acousto-optic modulator is reported. Measured linewidth of 1.7 cm-1 for these devices, under CW operating conditions, was in a good agreement with predictions of a model based on frequency-shifted feedback seeded by spontaneous emission. Linewidth broadening was observed for short sweep times, consistent with sound wave grating period variation across the illuminated area on the acousto-optic modulator. Standoff detection capability of the AOM-based QCL setup was demonstrated for several solid materials.

Publication Date

1-1-2016

Publication Title

AIP Advances

Volume

6

Issue

1

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1063/1.4940760

Socpus ID

84956979842 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84956979842

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