KLu(WO4)2crystal as the Raman medium in a diode-pumped passively Q-switched Nd:YAG laserOptoelectronics Letters - Tập 8 - Trang 321-324 - 2012
Hui-hua Xu, Xing-yu Zhang, Qing-pu Wang, Zhen-hua Cong, Cong Wang, Wei-tao Wang, Lei Li, Zhao-jun Liu, Xiao-han Chen, Shu-zhen Fan, Jian-li He, Huai-jin Zhang
A diode-pumped passively Q-switched Nd:YAG/KLu(WO4)2 (KLW) Raman laser is presented for the first time. As high as 1.89 W average output power is obtained at the pump power of 15.7 W with the pulse repetition frequency (PRF) of 27.2 kHz, and the corresponding diode-to-Stokes conversion efficiency is 12.0%. The highest pulse energy of 84.0 μJ is obtained. The obtained average output power and pulse...... hiện toàn bộ
Microwave photonic notch filter with complex coefficient based on four wave mixingOptoelectronics Letters - Tập 12 - Trang 417-420 - 2016
Dong Xu, Ye Cao, Zheng-rong Tong, Jing-peng Yang
A microwave photonic notch filter with a complex coefficient is proposed and demonstrated based on four wave mixing (FWM). FWM effect of two single-frequency laser beams occurs in a highly nonlinear fiber (HNLF), and multi-wavelength optical signals are generated and used to generate the multi-tap of microwave photonic filter (MPF). The complex coefficient is generated by using a Fourier-domain op...... hiện toàn bộ
Theoretical analysis of adaptive optics system based on stochastic parallel gradient descent algorithmOptoelectronics Letters - Tập 6 - Trang 426-428 - 2010
Hui-zhen Yang, Xin-yang Li
The adaptive optics (AO) technology without a wave-front sensor is simple and has more application fields than conventional AO technologies. The theory basis of the AO system based on stochastic parallel gradient descent (SPGD) from the convergence, the stability, and the averaged convergence rate is analyzed, where SPGD is used to control the AO system. The results show that the AO system based o...... hiện toàn bộ
A multi-wavelength fiber laser based on superimposed fiber grating and chirp fiber Bragg grating for wavelength selectionOptoelectronics Letters - Tập 11 - Trang 418-420 - 2015
Feng Wang, Wei-hong Bi, Xing-hu Fu, Peng Jiang, Yang Wu
In this paper, a new type of multi-wavelength fiber laser is proposed and demonstrated experimentally. Superimposed fiber grating (SIFG) and chirp fiber Bragg grating (CFBG) are used for wavelength selection. Based on gain equalization technology, by finely adjusting the stress device in the cavity, the gain and loss are equal, so as to suppress the modal competition and achieve multi-wavelength l...... hiện toàn bộ
Variations in the characteristics of CdxZn1−xS films deposited with little Cd-containing solutionsOptoelectronics Letters - Tập 19 - Trang 359-363 - 2023
Yifan Wang, Yuming Xue, Zhiyong Wang, Binbin Wen, Xin Xie, Chaoqun Lü
In order to prepare CdxZn1−xS films with lower cadmium content and better performance as a buffer layer for copper indium gallium selenide (CIGS) solar cells, the performance of CdxZn1−xS films deposited in a mixture of solutions containing extremely low cadmium sources was systematically investigated by chemical bath deposition (CBD) with the synergy of chemical experiments and numerical simulati...... hiện toàn bộ