Time Jitter and Intensity Noise of an All-Fiber High-Power Harmonic Mamyshev Oscillator

Wang, Tao; Li, Can; Ren, Bo; Guo, Kun; Wu, Jian; Leng, Jinyong; Zhang, Pu

doi:10.1109/jlt.2023.3278678

Cited by 3 publications

(1 citation statement)

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“…The RF spectrum in a frequency range of 1 GHz with an RBW of 10 kHz is presented in the inset, in which no spurious peaks can be observed. Figure 4(a) shows the measured phase noise (PN) spectrum in a frequency range of 10 Hz-10 MHz and the corresponding integrated time jitter (TJ), which were measured by employing a commercial cross-correlation phase noise analyzer, as reported in our previous work [46,47] . In the low frequency range between 10 Hz and 2 kHz, the amplitude of the PN rolled off rapidly, owing to the domination of technical noises in this frequency range, such as pump power variations and inevitable environmental disturbance, e.g., mechanical vibration and temperature fluctuation [48] , which most probably caused the formation of the narrow spike located at ∼390 Hz.…”

Section: Resultsmentioning

confidence: 99%

High-power all-fiber linearly polarized Yb-doped chirped pulse amplifier based on active polarization control

Wang,

Ren,

Chang

et al. 2024

中国光学快报

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High-power ultrafast laser amplification based on a non-polarization maintaining fiber chirped pulse amplifier is demonstrated. The active polarization control technology based on the root-mean-square propagation (RMS-prop) algorithm is employed to guarantee a linearly polarized output from the system. A maximum output power of 402.3 W at a repetition rate of 80 MHz is realized with a polarization extinction ratio (PER) of > 11.4 dB. In addition, the reliable operation of the system is verified by examining the stability and noise properties of the amplified laser. The M 2 factor of the laser beam at the highest output power is measured to be less than 1.15, indicating a diffraction-limited beam quality. Finally, the amplified laser pulse is temporally compressed to 755 fs with a highest average power of 273.8 W. This is the first time, to the best of our knowledge, that the active polarization control technology was introduced into the high-power ultrafast fiber amplifier.

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Section: Resultsmentioning

confidence: 99%