Broadband continuous-wave tuning of external cavity anticrossed dual-upper-state quantum cascade lasers

Tatsuo Dougakiuchi; Kazuue Fujita; Tadataka Edamura; Masamichi Yamanishi; Shinichi Furuta; Atsushi Sugiyama

doi:10.1117/12.907535

8 February 2012 Broadband continuous-wave tuning of external cavity anticrossed dual-upper-state quantum cascade lasers

Tatsuo Dougakiuchi, Kazuue Fujita, Tadataka Edamura, Masamichi Yamanishi, Shinichi Furuta, Atsushi Sugiyama

Proceedings Volume 8277, Novel In-Plane Semiconductor Lasers XI; 82770V (2012) https://doi.org/10.1117/12.907535
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

A wide wavelength tuning of an external cavity quantum-cascade (QC) laser based on the anticrossed dual-upper-state to multiple-lower-state design is demonstrated in continuous wave (cw) operation at room temperature. The tuning ranges of 321 cm^-1 (Δλ/λ~22%) in pulsed operation and 248 cm^-1 (Δλ/λ~17%) in cw operation are achieved, despite employment of the active region with translational symmetry. The present tuning range in cw operation substantially exceeds the values obtained with the QC lasers based on conventional broadband active region designs. In addition, the continuous, single mode tuning is realized with its widely homogeneous gain spectrum.

Citation Download Citation

Tatsuo Dougakiuchi, Kazuue Fujita, Tadataka Edamura, Masamichi Yamanishi, Shinichi Furuta, and Atsushi Sugiyama "Broadband continuous-wave tuning of external cavity anticrossed dual-upper-state quantum cascade lasers", Proc. SPIE 8277, Novel In-Plane Semiconductor Lasers XI, 82770V (8 February 2012); https://doi.org/10.1117/12.907535

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KEYWORDS

Continuous wave operation

Electroluminescence

Quantum cascade lasers

Pulsed laser operation

Wavelength tuning

Laser damage threshold

Light sources

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