Operation of terahertz quantum-cascade lasers at 164 K in pulsed mode and at 117 K in continuous-wave mode.

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Proposed for publication in Optics Express.

OSTI ID:989372

Kumar, Sushil ^[1]; Williams, Benjamin S ^[1]; Hu, Qing ^[1]; Reno, John Louis

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1. Massachusetts Institute of Technology, Cambridge, MA

We report the demonstration of a terahertz quantum-cascade laser that operates up to 164 K in pulsed mode and 117 K in continuous-wave mode at approximately 3.0 THz. The active region was based on a resonant-phonon depopulation scheme and a metal-metal waveguide was used for modal confinement. Copper to copper thermocompression wafer bonding was used to fabricate the waveguide, which displayed improved thermal properties compared to a previous indium-gold bonding method.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 989372
• Report Number(s): SAND2005-2210J; TRN: US201019%%468
• Journal Information: Proposed for publication in Optics Express., Vol. 13, Issue 9
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BONDING
CONFINEMENT
COPPER
LASERS
THERMODYNAMIC PROPERTIES
WAVEGUIDES