In-band pumped 2 μm pulsed laser with dual-wavelength synchronous output

Dong, Jiahao; Zhang, Cheng; Zhao, Yan; Long, Chenyu; Wang, Nan; Liu, Jie; Liu, Jingjing

doi:10.1016/j.infrared.2022.104189

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…[1] Thermal-bonded composite crystals have been widely used in laser fields. [2][3][4][5][6][7][8][9][10] On the one hand, composite crystals can improve the heat management of high average power lasers considerably, and reduce the thermal lens effect of crystal to obtain high optical-quality laser, which is beneficial to the stability and integration of laser system. [11][12][13][14][15][16] For example, Sugiyama et al prepared Nd:YVO 4 /YVO 4 bonded crystals, the bonded crystals could increase the laser output power by nearly twice that of the non-bonded crystals with the same degree of polarization of 99.2%.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of the Composite Nd:YAG/Nd:YAG Crystals

Chen

Liu

Sun

et al. 2023

Cryst. Res. Technol.

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Composite crystals can not only improve the heat management of high‐average‐power laser considerably to obtain the high‐optical‐quality laser, but also be used to prepare larger size crystals. The composite Nd:YAG/Nd:YAG crystals with the size of 50 mm × 15 mm × 24 mm are prepared by thermal bonding technique using alumina balls as the pressure transfer medium. Thermal bonding experiments are carried out under different heat treatment processes and sintering atmosphere, and the quality of the composite crystals is characterized by transmittance, extinction ratio, bonding strength, and laser properties. The results show that alumina ball as pressure transfer medium and vacuum sintering atmosphere can effectively improve the uniformity of pressure on the bonded crystals, which is beneficial to overcome the pressure inhomogeneity, reduce the bubble or hole, cracks and other defects in the bond interface, and the bonded crystal optical quality is improved considerably. The laser performance of the composite crystals pumped by laser diode is compared with single crystal and they have the same laser slope efficiency, which indicates that the thermal bond technique with alumina balls used as pressure transfer medium and vacuum sintering is a successful method to obtain high‐quality composite laser crystals.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of the Composite Nd:YAG/Nd:YAG Crystals

Chen

Liu

Sun

et al. 2023

Cryst. Res. Technol.

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Pulsed Ho:YLF laser intra-cavity pumped by a diode-pumped Q-switched Tm:YAP laser

Liu,

Peng,

Zhang

et al. 2024

Opt. Express

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We reported an intra-cavity pumped Q-switched laser with dual-wavelength synchronous output at 2066.7 nm and 1940nm. Ho:YLF crystal was pumped by a self-Q-switched Tm:YAP laser, which was served as both a gain medium and a saturable absorber simultaneously. For Ho:YLF laser, under 11.4-W incident pump power, a stable pulse laser was achieved at 2066.7 nm with the highest peak power of 69.65 W and the pulse repetition rate of 42.14 kHz. Under the same incident pump power, the highest peak power and pulse repetition rate of Tm:YAP laser were 17.85 W and 50.82 kHz, corresponding to the central wavelength of 1940nm. These results suggested that Q-switching without additional absorber element were effective way to obtain high-efficiency and compact 2.1 µm pulsed laser.

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In-band pumped 2 μm pulsed laser with dual-wavelength synchronous output

Cited by 2 publications

References 26 publications

Preparation and Characterization of the Composite Nd:YAG/Nd:YAG Crystals

Preparation and Characterization of the Composite Nd:YAG/Nd:YAG Crystals

Pulsed Ho:YLF laser intra-cavity pumped by a diode-pumped Q-switched Tm:YAP laser

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