Broad gain in a bound-to-continuum quantum cascade laser with heterogeneous active region

2011 ◽  
Vol 99 (24) ◽  
pp. 241108 ◽  
Author(s):  
Joshua R. Freeman ◽  
Anthony Brewer ◽  
Julien Madéo ◽  
Pierrick Cavalié ◽  
Sukhdeep S. Dhillon ◽  
...  
Keyword(s):  
Active Region ◽  
Quantum Cascade Laser ◽  
Quantum Cascade

Improved InGaAs/GaAsSb quantum cascade laser active region designs

2011 ◽  
Vol 58 (21) ◽  
pp. 2015-2020 ◽  
Author(s):  
H. Detz ◽  
M. Nobile ◽  
C. Deutsch ◽  
P. Klang ◽  
A.M. Andrews ◽  
...  
Keyword(s):  
Active Region ◽  
Quantum Cascade Laser ◽  
Quantum Cascade

Broadband quantum cascade laser gain medium based on a “continuum-to-bound” active region design

2010 ◽  
Vol 96 (21) ◽  
pp. 211106 ◽  
Author(s):  
Yu Yao ◽  
William O. Charles ◽  
Tracy Tsai ◽  
Jianxin Chen ◽  
Gerard Wysocki ◽  
...  
Keyword(s):  
Active Region ◽  
Quantum Cascade Laser ◽  
Gain Medium ◽  
Quantum Cascade ◽  
Laser Gain

Optical properties of a triple AlGaAs/GaAs quantum well purported for quantum cascade laser active region

2021 ◽  
Vol 26 ◽  
pp. 101936
Author(s):  
M.K. Bahar ◽  
K.A. Rodríguez-Magdaleno ◽  
J.C. Martínez-Orozco ◽  
M.E. Mora-Ramos ◽  
F. Ungan
Keyword(s):  
Optical Properties ◽  
Active Region ◽  
Quantum Well ◽  
Quantum Cascade Laser ◽  
Quantum Cascade

scholarly journals Recent progress in terahertz difference-frequency quantum cascade laser sources

Nanophotonics ◽  
2018 ◽  
Vol 7 (11) ◽  
pp. 1795-1817 ◽  
Author(s):  
Kazuue Fujita ◽  
Seungyong Jung ◽  
Yifan Jiang ◽  
Jae Hyun Kim ◽  
Atsushi Nakanishi ◽  
...  
Keyword(s):  
Active Region ◽  
Quantum Cascade Laser ◽  
Continuous Wave ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
High Resistivity ◽  
Dramatic Improvement ◽  
Terahertz Emission ◽  
Quantum Cascade ◽  
Frequency Generation

AbstractTerahertz quantum cascade laser (QCL) sources based on intra-cavity difference frequency generation are currently the only electrically pumped monolithic semiconductor light sources operating at room temperature in the 1–6-THz spectral range. Relying on the active regions with the giant second-order nonlinear susceptibility and the Cherenkov phase-matching scheme, these devices demonstrated drastic improvements in performance in the past several years and can now produce narrow-linewidth single-mode terahertz emission that is tunable from 1 to 6 THz with power output sufficient for imaging and spectroscopic applications. This paper reviews the progress of this technology. Recent efforts in wave function engineering using a new active region design based on a dual-upper-state concept led to a significant enhancement of the optical nonlinearity of the active region for efficient terahertz generation. The transfer of Cherenkov devices from their native semi-insulating InP substrates to high-resistivity silicon substrates resulted in a dramatic improvement in the outcoupling efficiency of terahertz radiation. Cherenkov terahertz QCL sources based on the dual-upper-state design have also been shown to exhibit ultra-broadband comb-like terahertz emission spectra with more than one octave of terahertz frequency span. The broadband terahertz QCL sources operating in continuous-wave mode produces the narrow inter-mode beat-note linewidth of 287 Hz, which indicates frequency comb operation of mid-infrared pumps and thus supports potential terahertz comb operation. Finally, we report the high-quality terahertz imaging obtained by a THz imaging system using terahertz QCL sources based on intra-cavity difference frequency generation.

Linear frequency-doubling in dual Mid-IR-wavelength quantum cascade laser active region

2009 ◽  
Vol 45 (3) ◽  
pp. 134-142 ◽  
Author(s):  
A. Rostami ◽  
H. Baghban Asghari Nejad ◽  
H. Rasooli Saghai ◽  
M. Noori
Keyword(s):  
Active Region ◽  
Quantum Cascade Laser ◽  
Frequency Doubling ◽  
Quantum Cascade ◽  
Linear Frequency
Sign in / Sign up

Export Citation Format

Share Document