CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9647 > Article
Open Access Paper
13 October 2015 Recent development of high power, widely tunable THz quantum cascade laser sources based on difference-frequency generation
M. Razeghi, Q. Y. Lu, N. Bandyopadhyay, S. Slivken
Author Affiliations +
Proceedings Volume 9647, Unmanned/Unattended Sensors and Sensor Networks XI; and Advanced Free-Space Optical Communication Techniques and Applications; 964703 (2015) https://doi.org/10.1117/12.2202967
Event: SPIE Security + Defence, 2015, Toulouse, France
Abstract
We present the recent development of high performance compact THz sources based on intracavity nonlinear frequency mixing in mid-infrared quantum cascade lasers. Significant performance improvements of our THz sources with respect to the continuous wave THz power output, monolithic THz tuning, and widely frequency are achieved by systematic optimization of the device's active region, waveguide design, and chip bonding strategy. Room temperature continuous wave THz power of more than 10 μW at 3.4 THz is demonstrated at room temperature. Monolithic THz tuning of a chip-based THz source from 2.6 to 4.2 THz with power up to 0.1 mW is achieved. Surface emission from the substrate via a diffraction grating with THz power up to 0.5 mW is also obtained. The developing characteristics show the potential for these THz sources as local oscillators for many astronomical and medical applications.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
M. Razeghi, Q. Y. Lu, N. Bandyopadhyay, and S. Slivken "Recent development of high power, widely tunable THz quantum cascade laser sources based on difference-frequency generation", Proc. SPIE 9647, Unmanned/Unattended Sensors and Sensor Networks XI; and Advanced Free-Space Optical Communication Techniques and Applications, 964703 (13 October 2015); https://doi.org/10.1117/12.2202967
PROCEEDINGS
 7 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Lens.org Logo
CITATIONS
Cited by 3 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Terahertz radiation
Quantum cascade lasers
Continuous wave operation
Diffraction gratings
Waveguides
Mid-IR
Polishing
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top