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Frequency comb expansion in a monolithic self‐mode‐locked laser concurrent with stimulated Raman scattering
Author(s) -
Lee C. Y.,
Chang C. C.,
Liang H. C.,
Chen Y. F.
Publication year - 2014
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201400017
Subject(s) - raman scattering , materials science , laser , raman spectroscopy , optics , frequency comb , optoelectronics , pulse (music) , raman laser , pulse repetition frequency , mode locking , power (physics) , laser power scaling , physics , telecommunications , computer science , radar , quantum mechanics , detector
The discovery of a novel phase‐locked frequency comb generated from a monolithic laser with the concurrent processes of self‐mode locking (SML) and stimulated Raman scattering (SRS) is reported. It is experimentally shown that the width of the Raman gain can be exploited to considerably expand the frequency comb of a monolithic SML crystal laser via the SRS process. At a pump power of 6.5 W, an output power of 140 mW in the Stokes wave with a pulse width as narrow as 2.9 ps at a pulse repetition rate of 6.615 GHz is obtained. The present finding not only provides useful insights into the monolithic intracavity SRS process but also paves the way for generating mode‐locked pulses based on monolithic self‐Raman crystals.