Infrared and Laser Engineering, Volume. 53, Issue 8, 20240168(2024)
Design and research of LD pulse pumped Er3+/Yb3+：Lu2Si2O7 crystal 100 kHz laser
Figures & Tables(8)
Fig. 1. The device diagram of passive Q-switched laser. (a) Collimating focusing lens combination; (b) Single focusing lens
Fig. 2. Free oscillating output power at different transmittance of output mirrors
Fig. 3. Free oscillating output power at different transmittance of output mirrors
Fig. 4. 100 kHz output pulse waveform. (a) Duty cycle 30%; (b) Duty cycle 70%
Fig. 5. Pulse performance for 100 kHz. (a) Pump waveform and output laser pulse train; (b) Pulse width figure; (c) Output laser spectra; (d) Far field facula and beam quality measurement diagram
Table 1. Optimization of pump beam diameter for 100 kHz
View tableView in ArticleTable 1. Optimization of pump beam diameter for 100 kHz
$ F\mathrm{_{focus}} $ mm $ {\omega }_{p} $ μm $ {f}_{p} $ kHz $ {T}_{Q} $ $ {T}_{OC} $ $ {\tau }_{P} $ μs $ {E}_{p} $ μJ $ f_0 $ kHz $ E_0 $ μJ 40 130 100 99% 10% 3 27 100 0.7 3 240 0.5 4 300 0.6 5 350 ＜100
Table 2. Repeated frequency and energy instability measured under different duty cycles
View tableView in ArticleTable 2. Repeated frequency and energy instability measured under different duty cycles
Power/W Duty cycle Repeated frequency instability Energy instability 9 30% 0.0345 0.1551 7.72 35% 0.0372 0.1926 6.75 40% 0.0391 0.2261 6 45% 0.0431 0.2746 5.4 50% 0.0446 0.3172 4.9 55% 0.0461 0.3631 4.5 60% 0.0513 0.3978 4.15 65% 0.0520 0.4339 3.85 70% 0.0566 0.4842
Table 3. Optimization of initial transmittance of Co2+：MgAl2O4 for 100 kHz
View tableView in ArticleTable 3. Optimization of initial transmittance of Co2+：MgAl2O4 for 100 kHz
$ {f}_{p} $ kHz $ {T}_{Q} $ $ {\omega }_{p} $ μm $ {T}_{OC} $ $ {\tau }_{P} $ μs $ {E}_{p} $ μJ $ f_0 $ kHz $ E_0 $ μJ $ \tau_0 $ ns 100 95.8% 130 10% 3 27 ＜100 99% 100 0.7 240 99.7% 0.5 270
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Jianing PENG, Xue HAN, Xiaolu NIE, Xiang GAO, Zhanda ZHU, Hong LEI, Qiang LI. Design and research of LD pulse pumped Er3+/Yb3+：Lu2Si2O7 crystal 100 kHz laser[J]. Infrared and Laser Engineering, 2024, 53(8): 20240168
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Received: Apr. 19, 2024
Accepted: --
Published Online: Oct. 29, 2024
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