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Wavelength tunable actively Q-switched fiber laser
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2021-01-01 , DOI: 10.1109/lpt.2020.3043074
Rodolfo Martinez-Manuel , Kaboko Jean-Jacques Monga , Johan Meyer

In this letter, we present the design and implementation of a wavelength tunable Q-switching fiber laser based on two-cascaded tunable filters; overlapping on transmission spectrum of both filters allows keeping the cavity losses at low level, while losing the overlapping condition increases the losses in the cavity. Following these two conditions, one tunable filter is used to select the wavelength emission of the laser; and the other tunable filter is used to actively switch on-off the overlapping condition along the range of tuning. Implementing this switching principle, pulses of light within 30 nanometers of tuning range are easily generated. Despite this range is limited by the Erbium-Ytterbium co-doped fiber implemented as the laser amplifier, the technique can be implemented at different wavelengths and ranges of emission using different doped fibers. Also, experimental characterization of the wavelength tunable pulsing laser is presented, pulsing emission at different wavelengths, time duration of pulses and average optical power as a function of wavelength, and time duration and peak power of pulses as a function of the switching rate.

中文翻译:

波长可调有源调Q光纤激光器

在这封信中,我们介绍了基于两个级联可调滤波器的波长可调 Q 开关光纤激光器的设计和实现;两个滤波器的透射谱重叠允许将腔体损耗保持在低水平,而失去重叠条件会增加腔体中的损耗。遵循这两个条件,一个可调滤波器用于选择激光器的波长发射;另一个可调滤波器用于在调谐范围内主动切换重叠条件。实施此开关原理,可轻松生成 30 纳米调谐范围内的光脉冲。尽管这个范围受到作为激光放大器的铒-镱共掺杂光纤的限制,该技术可以使用不同的掺杂光纤在不同的波长和发射范围内实施。此外,还介绍了波长可调谐脉冲激光器的实验表征、不同波长的脉冲发射、脉冲持续时间和平均光功率作为波长的函数,以及脉冲的持续时间和峰值功率作为开关速率的函数。
更新日期:2021-01-01
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