Open AccessUltrabroad supercontinuum generation by femtosecond dual-wavelength pumping in sapphire
Author(s) -
Wang Ke,
Liejia Qian,
Hongyu Luo,
Peng Yuan,
Heyuan Zhu
Publication year - 2006
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.14.006366
Subject(s) - supercontinuum , optics , femtosecond , materials science , sapphire , wavelength , optoelectronics , laser , octave (electronics) , ti:sapphire laser , photonic crystal fiber , physics
We study supercontinuum (SC) generation in sapphire pumped by two femtosecond lasers with dual wavelengths of 800 nm and 1054 nm. In comparison with the case pumped by single-wavelength pulses, the conversion efficiencies in the visible and infrared regions are enhanced by almost an order of magnitude, and the SC spectrum can be much flatter with dual-wavelength pulses pumping. The ultrabroad SC spanning from 350 nm to 1600 nm is obtained experimentally, which covers an octave of the pumping wavelengths.