摘要
We report the fabrication of cascaded photonic crystal fiber （PCF） tapers in monolithic design. Flat broadband supercontinuum （SC） generation in cascaded PCF tapers pumped by sub-nanosecond pulses from a 1 064-nm microchip laser is demonstrated. The spectral width （20 dB） extends from 0.47 to 1.67 μm. In the optimal configuration, an ultraflat （3 dB） spectrum from 500 to 1 000 nm is achieved.
We report the fabrication of cascaded photonic crystal fiber （PCF） tapers in monolithic design. Flat broadband supercontinuum （SC） generation in cascaded PCF tapers pumped by sub-nanosecond pulses from a 1 064-nm microchip laser is demonstrated. The spectral width （20 dB） extends from 0.47 to 1.67 μm. In the optimal configuration, an ultraflat （3 dB） spectrum from 500 to 1 000 nm is achieved.
基金
supported by the State Key Program of National Natural Science Foundation of China (No.61235008)
the National Natural Science Foundation of China (Nos. 61077076, 61007037, and 11004247)
the Hunan Provincial Natural Science Foundation of China (No.12JJ4061)
the International Science & Technology Cooperation Program of China (No. 2012DFG11470)
