Graphene-filled hollow optical fiber saturable absorber for efficient soliton fiber laser mode-locking

Title
Graphene-filled hollow optical fiber saturable absorber for efficient soliton fiber laser mode-locking
Authors
최선영조대근송용원오경환김기홍이상민염동일
Keywords
graphene; fiber laser; mode-locking
Issue Date
2012-02
Publisher
Optics express
Citation
VOL 20, NO 5, 5652-5657
Abstract
We demonstrate a novel in-line saturable absorber based on hollow optical fiber (HOF) filled with graphene composite for high power operation of mode-locked fiber laser. Evanescent field of guided mode propagating in few centimeter-long HOF interacts with the graphene/polyvinyl acetate (PVAc) composite, which enables robust and efficient nonlinear absorption leading to stable passive mode-locking. The mode-locked fiber laser generates soliton pulses with 5.9-nm spectral bandwidth and its maximum output power is measured up to 80 mW. We also observe passive harmonic mode-locking of soliton laser delivering stable pulses with a repetition rate of 506.9 MHz at 33rd harmonics.
URI
http://pubs.kist.re.kr/handle/201004/42063
ISSN
10944087
Appears in Collections:
KIST Publication > Article
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