Efficient terahertz-wave generation in mid-infrared quantum-cascade lasers with a common dual-upper-state active region

K. Fujita, A. Ito, M. Hitaka, T. Dougakiuchi, T. Edamura, M. Yamanishi, S. Jung, M. A. Belkin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report the performance of room temperature, single mode terahertz sources based on intracavity difference frequency generation in mid-infrared quantum cascade lasers with a common dual-upper-state (DAU) active region. As a result of designing of DAU active region for giant optical nonlinearity, the DAU devices with a dual-period buried distributed feedback grating operate in two single-mode mid-infrared wavelengths at 10.7 um and 9.7 um, and produce single-mode THz output at ∼2.9 THz with a side mode suppression ratio of ∼25 dB. A high mid-infrared to THz conversion efficiency of 0.8 mW/W is obtained at room temperature.

Original languageEnglish
Title of host publicationIRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982721
DOIs
StatePublished - 11 Nov 2015
Externally publishedYes
Event40th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2015 - Hong Kong, China
Duration: 23 Aug 201528 Aug 2015

Publication series

NameIRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves

Conference

Conference40th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2015
Country/TerritoryChina
CityHong Kong
Period23/08/1528/08/15

Fingerprint

Dive into the research topics of 'Efficient terahertz-wave generation in mid-infrared quantum-cascade lasers with a common dual-upper-state active region'. Together they form a unique fingerprint.

Cite this