Inherent intensity noise suppression in a mode-locked polycrystalline Cr:ZnS oscillator | Zendy

Xiangbao Bu | Zendy; Daiki Okazaki | Zendy; Satoshi Ashihara | Zendy

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Inherent intensity noise suppression in a mode-locked polycrystalline Cr:ZnS oscillator

Author(s) -

Xiangbao Bu,

Daiki Okazaki,

Satoshi Ashihara

Publication year - 2022

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.453382

Subject(s) - crystallite , materials science , optics , noise (video) , oscillation (cell signaling) , mode locking , second harmonic generation , optoelectronics , intensity (physics) , phase noise , diode , laser , physics , artificial intelligence , biology , computer science , metallurgy , image (mathematics) , genetics

We developed a diode-pumped, mode-locked polycrystalline Cr:ZnS oscillator using single-walled carbon nanotubes as a saturable absorber. The oscillator exhibits self-start mode-locking operation, generating sub-100 fs pulses with an average power of 300 mW. We found a unique feature in which the intensity noise originating from relaxation oscillation is suppressed by inherent second harmonic generation in polycrystalline Cr:ZnS. The observed noise suppression is reproduced by a theoretical model that includes an instantaneous nonlinear loss.

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