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980-nm all-fiber mode-locked Yb-doped phosphate fiber oscillator based on semiconductor saturable absorber mirror and its amplifier 被引量:4
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作者 李平雪 姚毅飞 +6 位作者 池俊杰 胡浩伟 张光举 梁博兴 张孟孟 马春媚 苏宁 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第8期185-190,共6页
A 980-nm semiconductor saturable absorber mirror(SESAM) mode-locked Yb-doped phosphate fiber laser is demonstrated by using an all-fiber linear cavity configuration. Two different kinds of cavity lengths are introdu... A 980-nm semiconductor saturable absorber mirror(SESAM) mode-locked Yb-doped phosphate fiber laser is demonstrated by using an all-fiber linear cavity configuration. Two different kinds of cavity lengths are introduced into the oscillator to obtain a robust and stable mode-locked seed source. When the cavity length is chosen to be 6 m, the oscillator generates an average output power of 3.5 m W and a pulse width of 76.27 ps with a repetition rate of 17.08 MHz. As the cavity length is optimized to short, 4.4-m W maximum output power and 61.15-ps pulse width are produced at a repetition rate of 20.96 MHz. The output spectrum is centered at 980 nm with a narrow spectral bandwidth of 0.13 nm. In the experiment, no undesired amplified spontaneous emission(ASE) nor harmful oscillation around 1030 nm is observed. Moreover,through a two-stage all-fiber-integrated amplifier, an output power of 740 m W is generated with a pulse width of 200 ps. 展开更多
关键词 980-nm fiber laser SESAM mode-locking Yb-doped phosphate fiber fiber amplifier
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Simultaneously Suppressing Low-Frequency and Relaxation Oscillation Intensity Noise in a DBR Single-Frequency Phosphate Fiber Laser 被引量:3
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作者 肖瑜 李灿 +4 位作者 徐善辉 冯洲明 杨昌盛 赵齐来 杨中民 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第6期73-76,共4页
Effective multiple optoelectronic feedback circuits for simultaneously suppressing low-frequency and relaxation oscillation intensity noise in a single-frequency phosphate fiber laser are demonstrated. The forward tra... Effective multiple optoelectronic feedback circuits for simultaneously suppressing low-frequency and relaxation oscillation intensity noise in a single-frequency phosphate fiber laser are demonstrated. The forward transfer function, which relates the laser output intensity to the pump modulations, is measured and analyzed. A custom two-path feedback system operating at different frequency bands is designed to adjust the pump current directly. The relative intensity noise is decreased by 20dB from 0.2 to 5kHz and over lOdB from 5 to lOkHz. The relaxation oscillation peak is suppressed by 22dB. In addition, a long term (24h) laser instability of less than 0.05% is achieved. 展开更多
关键词 kHz Simultaneously Suppressing Low-Frequency and Relaxation Oscillation Intensity Noise in a DBR Single-Frequency phosphate fiber Laser DBR RIN ROF
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Fusion Splicing Experiments of 1060-XP Silica Fiber with Phosphate Glass Fiber 被引量:2
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作者 杨昌盛 杨中民 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2007年第B12期847-849,共3页
An asymmetric heating method for fusion splicing of 1 060-XP silica fiber (1 060F) and phosphate glass fiber (PGF) using an electric arc splicer has been proposed. Double joints with the lowest splice loss of 0.6 ... An asymmetric heating method for fusion splicing of 1 060-XP silica fiber (1 060F) and phosphate glass fiber (PGF) using an electric arc splicer has been proposed. Double joints with the lowest splice loss of 0.6 dB and good bending-resist strength between 1 060 F and PGF has been obtained. The main reasons affecting fiber splice loss and strength have been analyzed. 展开更多
关键词 phosphate glass fiber (PGF) fusion splicing silica fiber
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