Title :
Phase-locking of a THz-QCL using a Low Noise HEB mixer, and a frequency-comb as a reference
Author :
Irimajiri, Yoshihisa ; Kumagai, Motohiro ; Morohashi, Isao ; Kawakami, Akira ; Nagano, Shigeo ; Sekine, Norihiko ; Ochiai, Satoshi ; Tanaka, Shoji ; Hanado, Yuko ; Uzawa, Y. ; Hosako, Iwao
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
We have developed a phase-locking system of a 3.1THz QCL (Quantum Cascade Laser) using a low noise hot electron bolometer mixer (HEBM) and a THz reference. The THz reference was generated by photomixing two optical modes of a frequency comb. The THz-QCL and HEBM devices are fabricated in our laboratory. A line width of the phase-locked QCL of narrower than 1Hz was achieved.
Keywords :
bolometers; hot carriers; mixers (circuits); quantum cascade lasers; HEBM device; THz-QCL; frequency 3.1 THz; frequency-comb reference; low noise HEB mixer; low noise hot electron bolometer mixer; optical mode; phase-locking system; photomixing; quantum cascade laser; Harmonic analysis; Local oscillators; Mixers; Optimized production technology; Quantum cascade lasers; Receivers; Signal resolution;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956401
