Lamb-dip-locked quantum cascade laser for comb-referenced IR absolute frequency measurements | Zendy

Simone Borri | Zendy; Saverio Bartalini | Zendy; Iacopo Galli | Zendy; P. Cancio | Zendy; G. Giusfredi | Zendy; D. Mazzotti | Zendy; A. Castrillo | Zendy; L. Gianfrani | Zendy; Paolo De Natale | Zendy

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Lamb-dip-locked quantum cascade laser for comb-referenced IR absolute frequency measurements

Author(s) -

Simone Borri,

Saverio Bartalini,

Iacopo Galli,

P. Cancio,

G. Giusfredi,

D. Mazzotti,

A. Castrillo,

L. Gianfrani,

Paolo De Natale

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.011637

Subject(s) - quantum cascade laser , optics , frequency comb , laser , cascade , materials science , frequency modulation , optoelectronics , physics , radio frequency , chemistry , telecommunications , chromatography , computer science

The frequency of a DFB quantum cascade laser (QCL) emitting at 4.3 microm has been long-term stabilized to the Lamb-dip center of a CO2 ro-vibrational transition by means of first-derivative locking to the saturated absorption signal. Thanks to the non-linear sum-frequency generation (SFG) process with a fiber-amplified Nd:YAG laser, the QCL mid-infrared (IR) radiation has been linked to an optical frequency-comb synthesizer (OFCS) and its absolute frequency counted with a kHz-level precision and an overall uncertainty of 75 kHz.

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