Highly Efficient Wavelength-Tunable Anti-Stokes Signal Conversion of Femtosecond Pulses in the Fundamental Mode of Photonic Crystal Fiber

• Published in: IEEE journal of quantum electronics 2010-05, Vol.46 (5), p.728-733
• Main Authors: Yuan, Jinhui, Sang, Xinzhu, Yu, Chongxiu, Li, Shuguang, Zhou, Guiyao, Hou, Lantian
• Format: Article
• Language: English
• Subjects: Anti-stokes signals; Conversion; Crystal fibers; Dispersions; Distributed power generation; fiber design and fabrication; Fiber lasers; Fluid flow; fundamental mode; Laser modes; Lasers; Optical design; Optical pulse generation; PCF; phased-matched FWM; Photonic crystal fibers; Photonic crystals; Power generation; Pumps; Signal design; Signal generators; Wavelength conversion; Wavelengths
• ISSN: 0018-9197; 1558-1713
• DOI: 10.1109/JQE.2009.2034754

With the photonic crystal fiber (PCF) with the zero dispersion wavelength of fundamental mode around 830 nm designed and fabricated in our lab, the anti-Stokes signals from 603 to 535 nm are efficiently generated in the fundamental mode by Ti:sapphire laser with central wavelength of 820 nm and pulse width of 150 fs. When the pump power increases from 80 to 320 mW in a separation of 40 mW, the output powers of anti-Stokes signals increase 6 times, and the maximum power ratio of anti-Stokes signal at 535 nm to the residual pump component is estimated as 12:1. The maximum output power ratio of the anti-Stokes signal at 535 nm and the Stokes component at 865 nm is about 2:1. The maximum conversion efficiency of P a / P p0 in experiment can achieve up to 42%, and the possible reasons for discrepancy between experimental and theoretical results are analyzed. Moreover, the influences of other factors on experiment process are elementarily discussed.