TY  - CONF
AU  - Hovenier J.N.
AU  - Adam A.J.L.
AU  - Kašalynas I.
AU  - Gao J.R.
AU  - Klaassen T.O.
AU  - Baryshev A.
AU  - Williams B.S.
AU  - Kumar S.
AU  - Hu Q.
AU  - Reno J.L.
PY  - 2006
DA  - 2006//
TI  - Phase-locking on the beat signal of a two-mode 2.7  terahertz metal-metal quantum cascade laser
BT  - Proc. Symp. IEEE/LEOS Benelux Chapter
SP  - 125
EP  - 128
AB  - We have studied the linewidth and phase-locking of a 2.7 THz quantum cascade laser by using a superconducting bolometer mixer. The 8 GHz beat signal is compared with a microwave reference with a feedback to the laser bias current. Phase locking has been demonstrated, resulting in an extremely narrow beat linewidth of less than 10 Hz. Under frequency-stabilization conditions we find that the line profile is virtually Lorentzian with a long-term minimum linewidth of the THz modes of about 6.3 kHz. Temperature dependent measurements suggestthat this linewidthdoes not approach the Schawlow-Townes limit.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=968), last updated on Tue, 25 May 2021 14:48:25 -0500
ID  - HovenierJ.N._etal2006
ER  -