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Title: Metasurface external cavity laser

Abstract

A vertical-external-cavity surface-emitting-laser is demonstrated in the terahertz range, which is based upon an amplifying metasurface reflector composed of a sub-wavelength array of antenna-coupled quantum-cascade sub-cavities. Lasing is possible when the metasurface reflector is placed into a low-loss external cavity such that the external cavity—not the sub-cavities—determines the beam properties. A near-Gaussian beam of 4.3° × 5.1° divergence is observed and an output power level >5 mW is achieved. The polarized response of the metasurface allows the use of a wire-grid polarizer as an output coupler that is continuously tunable.

Authors:
; ;  [1]; ;  [1];  [2]
  1. Department of Electrical Engineering, University of California, Los Angeles, California 90095 (United States)
  2. Northrop Grumman Aerospace Systems, Redondo Beach, California 90278 (United States)
Publication Date:
OSTI Identifier:
22486144
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; BEAMS; GRIDS; LASERS; SURFACES; WAVELENGTHS

Citation Formats

Xu, Luyao, Curwen, Christopher A., Williams, Benjamin S., California NanoSystems Institute, University of California, Los Angeles, California 90095, Hon, Philip W. C., Itoh, Tatsuo, and Chen, Qi-Sheng. Metasurface external cavity laser. United States: N. p., 2015. Web. doi:10.1063/1.4936887.
Xu, Luyao, Curwen, Christopher A., Williams, Benjamin S., California NanoSystems Institute, University of California, Los Angeles, California 90095, Hon, Philip W. C., Itoh, Tatsuo, & Chen, Qi-Sheng. Metasurface external cavity laser. United States. https://doi.org/10.1063/1.4936887
Xu, Luyao, Curwen, Christopher A., Williams, Benjamin S., California NanoSystems Institute, University of California, Los Angeles, California 90095, Hon, Philip W. C., Itoh, Tatsuo, and Chen, Qi-Sheng. 2015. "Metasurface external cavity laser". United States. https://doi.org/10.1063/1.4936887.
@article{osti_22486144,
title = {Metasurface external cavity laser},
author = {Xu, Luyao and Curwen, Christopher A. and Williams, Benjamin S. and California NanoSystems Institute, University of California, Los Angeles, California 90095 and Hon, Philip W. C. and Itoh, Tatsuo and Chen, Qi-Sheng},
abstractNote = {A vertical-external-cavity surface-emitting-laser is demonstrated in the terahertz range, which is based upon an amplifying metasurface reflector composed of a sub-wavelength array of antenna-coupled quantum-cascade sub-cavities. Lasing is possible when the metasurface reflector is placed into a low-loss external cavity such that the external cavity—not the sub-cavities—determines the beam properties. A near-Gaussian beam of 4.3° × 5.1° divergence is observed and an output power level >5 mW is achieved. The polarized response of the metasurface allows the use of a wire-grid polarizer as an output coupler that is continuously tunable.},
doi = {10.1063/1.4936887},
url = {https://www.osti.gov/biblio/22486144}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 22,
volume = 107,
place = {United States},
year = {Mon Nov 30 00:00:00 EST 2015},
month = {Mon Nov 30 00:00:00 EST 2015}
}