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Proceedings Paper

Broadband continuous-wave tuning of external cavity anticrossed dual-upper-state quantum cascade lasers
Author(s): Tatsuo Dougakiuchi; Kazuue Fujita; Tadataka Edamura; Masamichi Yamanishi; Shinichi Furuta; Atsushi Sugiyama
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Paper 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.

Paper Details

Date Published: 8 February 2012
PDF: 8 pages
Proc. SPIE 8277, Novel In-Plane Semiconductor Lasers XI, 82770V (8 February 2012); doi: 10.1117/12.907535
Show Author Affiliations
Tatsuo Dougakiuchi, Hamamatsu Photonics K.K. (Japan)
Kazuue Fujita, Hamamatsu Photonics K.K. (Japan)
Tadataka Edamura, Hamamatsu Photonics K.K. (Japan)
Masamichi Yamanishi, Hamamatsu Photonics K.K. (Japan)
Shinichi Furuta, Hamamatsu Photonics K.K. (Japan)
Atsushi Sugiyama, Hamamatsu Photonics K.K. (Japan)


Published in SPIE Proceedings Vol. 8277:
Novel In-Plane Semiconductor Lasers XI
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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