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Inside Back Cover: Microcavity‐Stabilized Quantum Cascade Laser (Laser Photonics Rev. 10(1)/2016)
Author(s) -
Mario Siciliani de Cumis,
Simone Borri,
Giacomo Insero,
Iacopo Galli,
Anatoliy A. Savchenkov,
Danny Eliyahu,
Vladimir S. Ilchenko,
Naota Akikusa,
Andrey B. Matsko,
P. De Natale
Publication year - 2016
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201670017
Subject(s) - laser linewidth , laser , photonics , cover (algebra) , metrology , optoelectronics , quantum cascade laser , physics , optics , resonator , quantum optics , cascade , whispering gallery wave , chemistry , engineering , mechanical engineering , chromatography
Narrow‐linewidth lasers are key elements in optical metrology and spectroscopy. Among the innovative solutions aimed to answer the need of stable mid‐IR references are crystalline whispering gallery mode microresonators. Here, a CaF2 microresonator is used for frequency stabilization and linewidth narrowing of a mid‐IR quantum cascade laser. The laser fills the resonator via evanescent‐wave coupling. The method, which allowed for a linewidth reduction down to ten kHz over 1 s, is very promising for mid‐infrared metrology and on‐chip infrared spectrometers. Cover art by Ugo and Mario Siciliani de Cumis. (Picture: Mario Siciliani de Cumis et al., 10.1002/lpor.201500214 pp. 153–157, in this issue)