Journal article
Degenerate and nondegenerate lateral-mode patterns in quantum cascade lasers
Applied physics letters, Vol.94(1), p.13501
01/05/2009
DOI: 10.1063/1.3058768
Abstract
We experimentally investigate near-field lateral-mode patterns of 10-25-μm -wide quantum cascade wide-ridge lasers with few lateral modes using a 1-GHz-resolution spatially resolving midinfrared spectrometer. The results supported by simple box-model theory demonstrate that, depending on the laser geometry, one can either obtain lateral-mode frequency degeneracy or find the high-order lateral modes to be blueshifted or redshifted from the fundamental. We show that, with proper laser geometry, all longitudinal and lateral modes can be frequency nondegenerate and, therefore, be easily suited for spatiospectral mode combining to increase brightness. © 2009 American Institute of Physics.
Details
- Title: Subtitle
- Degenerate and nondegenerate lateral-mode patterns in quantum cascade lasers
- Creators
- Nikolai Stelmakh - University of Texas at ArlingtonMichael Vasilyev - Department of Electrical EngineeringFatima Toor - Princeton UniversityClaire Gmachl - Electrical Engineering
- Resource Type
- Journal article
- Publication Details
- Applied physics letters, Vol.94(1), p.13501
- DOI
- 10.1063/1.3058768
- ISSN
- 0003-6951
- eISSN
- 1077-3118
- Language
- English
- Date published
- 01/05/2009
- Academic Unit
- Physics and Astronomy; Electrical and Computer Engineering; Iowa Technology Institute; Holden Comprehensive Cancer Center
- Record Identifier
- 9984197349902771
Metrics
15 Record Views