We report on the narrowing of a room-temperature mid-IR quantum cascade laser by frequency locking it to a CO2 sub-Doppler transition obtained by polarization spectroscopy. A locking bandwidth of 250 kHz has been achieved. The laser linewidth is narrowed by more than two orders of magnitude below 1 kHz, and its absolute frequency is stabilized at the same level. (C) 2012 Optical Society of America
Subkilohertz linewidth room-temperature mid-infrared quantum cascade laser using a molecular sub-Doppler reference
Cappelli F
;Galli I;Borri S;Giusfredi G;Cancio P;Mazzotti D;Montori A;Bartalini S;De Natale P
2012
Abstract
We report on the narrowing of a room-temperature mid-IR quantum cascade laser by frequency locking it to a CO2 sub-Doppler transition obtained by polarization spectroscopy. A locking bandwidth of 250 kHz has been achieved. The laser linewidth is narrowed by more than two orders of magnitude below 1 kHz, and its absolute frequency is stabilized at the same level. (C) 2012 Optical Society of AmericaFile in questo prodotto:
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Descrizione: Subkilohertz linewidth room-temperature mid-infrared quantum cascade laser using a molecular sub-Doppler reference
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