Performance improvement of high repetition rate electro-optical cavity-dumped Nd:GdVO4 laser

Yu, Xin; Wang, C.; F., Y.; Chen, F.; Yan, Renpeng; Li, Xiaodong

doi:10.1007/s00340-011-4786-7

Cited by 16 publications

(5 citation statements)

References 9 publications

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“…[11], unique dynamics analysis proved that a high-PRR cavity-dumped laser has inherent instability. Though cavity dumping at very high PRR was expected [10].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the pulse width of a cavitydumped laser is determined by the cavity length and the optical switch speed, independent of the laser gain or PRR as conventional Q-switched lasers. Though acoustic-optic cavity dumping has simple arrangement and low cost, slow switching speed results in much larger pulse width (tens of nanoseconds or more) than the electro-optic ones (several nanoseconds) [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Very high repetition-rate electro-optical cavity-dumped Nd: YVO4 laser with optics and dynamics stabilities

Liu

Shi

Huang

et al. 2015

Optics Communications

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“…[11], unique dynamics analysis proved that a high-PRR cavity-dumped laser has inherent instability. Though cavity dumping at very high PRR was expected [10].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Very high repetition-rate electro-optical cavity-dumped Nd: YVO4 laser with optics and dynamics stabilities

Liu

Shi

Huang

et al. 2015

Optics Communications

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“…Nanosecond (ns) pulsed laser with high average power and high pulse repetition rate (PRR) above 50 kHz is a potential solution for laser cutting, laser welding, laser cleaning and many other industry processing scenarios, becoming the difficulty and focus of pulsed laser 1 . Due to the influence of thermo-mechanical properties, the output power of lasers with gain mediums such as Nd:YVO 4 and Nd:GdVO 4 , which are commonly used in high PRR Q-switching at 50 kHz and above, is limited, the current achievements are mainly concentrated on the order of tens of watts [2][3][4][5][6][7] . Nd:YAG is a widely used solid-state gain medium with many advantages such as high mechanical strength, high thermal conductivity and great optical properties.…”

Section: Introductionmentioning

confidence: 99%

Kilowatt-level 100 kHz nanosecond pulsed laser amplifier via a 205-watt seeding

Yang

Yang²,

Zhou³

et al. 2022

Sixth International Symposium on Laser Interaction With Matter

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Nanosecond (ns) pulsed laser with high average power and high pulse repetition rate above 50 kHz is a potential solution for laser cutting, laser welding, laser cleaning and many other industry processing scenarios. Although Nd:YAG is a widely used solid-state gain medium, it is difficult to obtain ns pulsed laser with repetition rate above 50 kHz due to its limited stimulated emission cross section and thermal distortion under high pump intensity. In this paper, a kilowatt-level 100 kHz high repetition rate ns Nd:YAG master oscillator power amplifier (MOPA) laser system is reported, and a general optimization method was used to obtain a 205 W seed laser with a high repetition rate of 100 kHz. After beam shaping elements, the seed laser was amplified to 1008 W by a two-rod Nd:YAG preamplifier and a two-rod Nd:YAG main amplifier. The pulse-to-pulse stability factor of the pulsed laser was 0.961 and the pulse width was measured as 142.8 ns. The beam parameter product in the horizontal axis and vertical axis were measured as BPPx = 2.81 mm∙mrad and BPPy = 2.78 mm∙mrad respectively. This is the first time to obtain a kilowatt-level average power ns pulsed laser with repetition rate above 50 kHz using Nd:YAG, and the compact MOPA system is also suitable for power scaling and other practical use.

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“…Compared to the microwave radar, laser 1,2 has a shorter wavelength and higher frequency, which allows lidar to achieve higher spatial resolution and directionality 3,4 . Furthermore, lidar has an advantage in solving small targets problem.…”

Section: Introductionmentioning

confidence: 99%

A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

Xing

Gao

et al. 2021

Micro & Optical Tech Letters

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A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and AE 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.

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Performance improvement of high repetition rate electro-optical cavity-dumped Nd:GdVO4 laser

Cited by 16 publications

References 9 publications

Very high repetition-rate electro-optical cavity-dumped Nd: YVO4 laser with optics and dynamics stabilities

Very high repetition-rate electro-optical cavity-dumped Nd: YVO4 laser with optics and dynamics stabilities

Kilowatt-level 100 kHz nanosecond pulsed laser amplifier via a 205-watt seeding

A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

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