Open AccessCoherent ultrashort pulse generation from incoherent light by pulse trapping in birefringent fibers
Author(s) -
Eiji Shiraki,
Norihiko Nishizawa
Publication year - 2012
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.20.011073
Subject(s) - optics , ultrashort pulse , birefringence , multiphoton intrapulse interference phase scan , pulse (music) , femtosecond pulse shaping , bandwidth limited pulse , materials science , optical fiber , laser , physics , detector
We investigated the nonlinear fiber phenomena of pulse trapping and amplification between incoherent light and an ultrashort soliton pulse in birefringent fibers both experimentally and numerically. Using the phenomena in a 1.4 km-long low-birefringence fiber, a coherent, nearly transform-limited, sech2-shaped, ultrashort pulse was generated from incoherent light from a super-luminescent diode. The average pulse energy and pulse width were 121 pJ and 640 fs, respectively. The estimated gain of this system was as large as 62 dB.