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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2021 Vol.22 No.3 P.312-317
2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable absorber
Abstract: Developing new saturable absorbers for use in the mid-infrared region has practical significance for short-pulsed lasers and related scientific and industrial applications. The performance of gold nanorods (GNRs) as saturable absorbers at novel mid-infrared wavelengths needs to be evaluated even though these benefit from ultrafast nonlinear responses and broadband saturable absorption. Passive Q-switching of an LD-pumped 2.3 μm Tm:YLF laser using GNRs was successfully realized in this study. Pulses with an 843 ns pulse width and a 6.67 kHz repetition rate were achieved using this Q-switched laser. Results showed that GNRs provide promising passive Q-switches for 2.3 μm Tm-doped lasers.
Key words: Gold nanorods, Passive Q-switching, 2.3 μm, Tm-doped laser materials
江苏师范大学物理与电子工程学院，中国徐州市，221116
摘要：探索新型中红外波段饱和吸收体材料，评价其在特定波段的激光脉冲产生性能是激光技术领域的重要研究方向，对新波段短脉冲激光产生及其相关的科学和工业应用具有重要意义。金纳米棒具备超快的非线性响应和宽带可饱和吸收特性，其作为新颖中红外波段可饱和吸收体的性能需要研究与评价。本文成功实现基于金纳米棒饱和吸收体的2.3 μm LD泵浦Tm:YLF激光器的被动调Q运转，获得脉冲宽度为843 ns、重复频率为6.67 kHz的脉冲输出。结果表明，金纳米棒可以作为2.3 μm掺铥激光器有潜力的被动调Q开关材料。
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DOI:
10.1631/FITEE.2000110
CLC number:
TN248.1
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On-line Access:
2021-03-08
Received:
2020-03-13
Revision Accepted:
2020-05-05
Crosschecked:
2020-06-05