Widely Wavelength-Tunable Blue-Shifted Dispersive Waves for Broadband Visible Wavelength Generation in a Photonic Crystal Fiber Cladding
YUAN Jin-Hui1**, SANG Xin-Zhu1, YU Chong-Xiu1, SHEN Xiang-Wei1, WANG Kui-Ru1, YAN Bin-Bin1, HAN Ying2, ZHOU Gui-Yao2,3, HOU Lan-Tian2
1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876 2Institute of Infrared Optical Fibers and Sensors, Physics Department, Yanshan University, Qinhuangdao 066004 3School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006
Abstract：Blue-shifted dispersive waves (DWs) are efficiently generated from the red-shifted solitons by coupling the 120 fs pulses into the fundamental mode of the multi-knots of a photonic crystal fiber cladding. When the femtosecond pulses at the wavelength of 825 nm and the average power of 300 mW are coupled into knots 1–3, the conversion efficiency ηDW of 32% and bandwidth BDW of 50 nm are obtained. The ultrashort pulses generated by the DWs can be tunable over the whole visible wavelength by adjusting the wavelengths of the pump pulses coupled into different knots. It can be believed that this widely wavelength-tunable ultrashort visible pulse source has important applications in ultrafast photonics and resonant Raman scattering.
2012, Vol. 29 
