Wang Guizhong, Jiang Tongxiao, Li Chen, Yang Hongyu, Wang Aimin, Zhang Zhigang
State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China.
Opt Express. 2013 Feb 25;21(4):4703-8. doi: 10.1364/OE.21.004703.
The octave-spanning spectrum was generated in a tellurite glass based microstructured fiber pumped by a 528 MHz repetition rate Yb:fiber ring laser without amplification. The laser achieved 40% output optical-to-optical efficiency with the output power of 410 mW. By adjusting the grating pair in the cavity, this oscillator can work at different cavity dispersion regimes with the shortest dechirped pulse width of 46 fs. The output pulses were then launched into a high-nonlinearity tellurite fiber, which has the zero-dispersion wavelength at ~1 μm. The high nonlinearity coefficient (1348 km⁻¹W⁻¹) and the matched zero-dispersion wavelength with pump laser enable the octave-spanning supercontinuum generated from 750 nm to 1700 nm with the coupled pulse energy above 10 pJ.
倍频程跨度光谱是在由重复频率为528 MHz的无放大Yb光纤环形激光器泵浦的碲酸盐玻璃基微结构光纤中产生的。该激光器实现了40%的输出光光效率，输出功率为410 mW。通过调整腔内的光栅对，该振荡器可以在不同的腔色散状态下工作，最短去啁啾脉冲宽度为46 fs。然后将输出脉冲注入到高非线性碲酸盐光纤中，该光纤的零色散波长约为1μm。高非线性系数（1348 km⁻¹W⁻¹）以及与泵浦激光器匹配的零色散波长使得能够产生从750 nm到1700 nm的倍频程跨度超连续谱，耦合脉冲能量高于10 pJ。
