1016nm all fiber picosecond MOPA laser with 50W output

Abstract

This paper presents an all fiber high power picosecond laser at 1016 nm in master oscillator power amplifier (MOPA) configuration. A direct amplification of this seed source encounters obvious gain competition with amplified spontaneous emission (ASE) at ~1030 nm, leading to a seriously reduced amplification efficiency. To suppress the ASE and improve the amplification efficiency, we experimentally investigate the influence of the gain fiber length and the residual ASE on the perforemance of the 1016 nm amplifier. The optimized 1016 nm MOPA laser exhibits an average power of 50 W and an optical conversion efficiency of 53%.

1018 nm Yb-doped high-power fiber laser pumped by broadband pump sources around 915 nm with output power above 100 W

“…The length of the active fiber was optimized to be 3 m, the OC-FBG was chosen to be 10% (as used in Refs. [1][2][3][5][6][7]), and input launched pump power was maintained at 30 W. The simulation shows the behavior of the model system when pumped with wavelengths from 966 through 986 nm. The results show that the viable pumping wavelengths, efficiency-wise, are around 971-982 nm, since other wavelengths yielded an efficiency less than 50%.…”

“…Ytterbium-doped fiber lasers (YDFL) operating at 1018 nm wavelength have a lot of applications, especially as pump sources in tandem configuration for high-power amplifiers [1][2][3][4], pulsed lasers [5], and random fiber lasers [6]. In the case of tandem pumping, 1018 nm YDFLs are very efficient pump sources for high-power lasers with outputs at higher wavelengths, such as 1060-1080 nm, due to a lower quantum defect and higher brightness compared to the conventional 915 nm or 976 nm diode pump sources [7], i.e., an upper limit to the output power or optical-to-optical efficiency [8].…”

“…(a) Numerical simulation of laser output power versus fiber lengths for three different OC-FBG reflectivities. (b) Simulation results of the output power and efficiency of the 1018 nm YDFLs while pump wavelength varies between 902 and 924 nm, and while pump wavelength varies between 966 and 986 nm[1][2][3][5][6][7], as shown in the inset of (b). The launched power was fixed to 30 W throughout all of the numerical analysis for the sake of compatibility with the experimental work.…”

Amplification of Dissipative Solitons With a Taper Fiber Amplifier

“…Дальнейшее увеличение выходной мощности лазера возможно при использовании дополнительного волоконного усилителя, например на основе LMA-световода. Так, например, в работе [3] авторы, используя 3 каскада усиления, с помощью LMA-волокон усилили 120 пс импульс до энергии 1,85 мкДж. Дальнейшее увеличение энергии импульса сопровождается сильными нелинейными эффектами.…”

Усиление Диссипативных Солитонов PM-тейперным Волоконным Усилителем

“…Использование в резонаторе волокон с большим диаметром моды (LMA) позволяет повысить порог генерации вынужденного комбинационного рассеяния (ВКР) и увеличить энергию импульса до 50 нДж. Дальнейшее увеличение выходной мощности лазера возможно при использовании дополнительного волоконного усилителя, например, на основе LMA световода [2] или микроструктурированных оптических волокон (PCF) [3]. Перспективным методом усиления оптического сигнала является использование тейперного (конусного) волокна с плавно меняющимся диаметром сердцевины [4,5], что позволяет существенно повысить порог возникновения различных нелинейных эффектов.…”