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Ultrafast Saturable Absorbers: Fused Silica with Embedded 2D‐Like Ag Nanoparticle Monolayer: Tunable Saturable Absorbers by Interparticle Spacing Manipulation (Laser Photonics Rev. 14(2)/2020)
Author(s) -
Li Rang,
Pang Chi,
Li Ziqi,
Yang Ming,
Amekura Hiroshi,
Dong Ningning,
Wang Jun,
Ren Feng,
Wu Qiang,
Chen Feng
Publication year - 2020
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.202070014
Subject(s) - saturable absorption , materials science , ultrashort pulse , laser , monolayer , nanoparticle , photonics , absorption (acoustics) , optoelectronics , optics , wavelength , nanotechnology , fiber laser , composite material , physics
In article number 1900302, Rang Li, Feng Chen, and coworkers have developed a novel 2D‐like Ag nanoparticle monolayer to efficiently tailor the optical nonlinearities of fused silica. By interparticle spacing manipulation, the fused silica with embedded Ag nanoparticles can serve as a tunable saturable absorber that operates at 1 μ m wavelength regime. The thermodynamics investigation by a two‐temperature model ably explains the intrinsic physical mechanism of the saturable absorption. By using this silica‐based saturable absorber, 27‐ps laser pulses with a repetition rate of 6.5 GHz have been generated through the passive mode‐locking process.