Distributed-feedback terahertz quantum-cascade lasers using laterally corrugated metal waveguides.
Journal Article
·
· Proposed for publication in Optics Letters.
OSTI ID:972142
- Massachusetts Institute of Technology, Cambridge, MA
We report the demonstration of distributed-feedback terahertz quantum-cascade lasers based on a first-order grating fabricated via a lateral corrugation in a double-sided metal ridge waveguide. The phase of the facet reflection was precisely set by lithographically defined facets by dry etching. Single-mode emission was observed at low to moderate injection currents, although multimode emission was observed far beyond threshold owing to spatial hole burning. Finite-element simulations were used to calculate the modal and threshold characteristics for these devices, with results in good agreement with experiments.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 972142
- Report Number(s):
- SAND2005-4031J
- Journal Information:
- Proposed for publication in Optics Letters., Journal Name: Proposed for publication in Optics Letters.
- Country of Publication:
- United States
- Language:
- English
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