43W picosecond laser and second-harmonic generation experiment

Peng, Runwu; Ge, Lin; Zhang, Xiaofu; Li, Fangqin; Cui, Qianjin; Yang, Bo; Peng, Qinjun; Cui, Dafu; Xu, Zuyan; Tang, Lijun

doi:10.1016/j.optcom.2008.10.049

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…The generation of >20 W of average power was also reported using a frequency-doubled 26.5-ps Nd:YVO 4 and Nd:YAG MOPA system [10]. All the results in Refs [6,[8][9][10]. showed excellent beam quality with M 2 values ranging from 1.2 to 2.5.…”

Section: Introductionmentioning

confidence: 72%

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130-W picosecond green laser based on a frequency-doubled hybrid cryogenic Yb:YAG amplifier

Hong¹,

Lai²,

Siddiqui³

et al. 2009

Opt. Express

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130-W average-power picosecond green laser pulses at 514.5 nm are generated from a frequency-doubled hybrid cryogenic Yb:YAG laser. A second-harmonic conversion efficiency of 54% is achieved with a 15-mm-long noncritically phase-matched lithium triborate (LBO) crystal from a 240-W 8-ps 78-MHz pulse train at 1029 nm. The high-average-power hybrid laser system consists of a picosecond fiber chirped-pulse amplification seed source and a cryogenically-cooled double-pass Yb:YAG amplifier. The M(2) value of 2.7, measured at 77 W of second-harmonic power, demonstrates a good focusing quality. A thermal analysis shows that the longitudinal temperature gradient can be the main limiting factor in the second-harmonic efficiency. To our best knowledge, this is the highest-average-power green laser source generating picosecond pulses.

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Section: Introductionmentioning

confidence: 72%

“…More recently, 87 W of green light was generated from a 33-ps Nd:YVO 4 MOPA system with a conversion efficiency as high as 80% [9]. The generation of >20 W of average power was also reported using a frequency-doubled 26.5-ps Nd:YVO 4 and Nd:YAG MOPA system [10]. All the results in Refs [6,[8][9][10].…”

Section: Introductionmentioning

confidence: 90%

130-W picosecond green laser based on a frequency-doubled hybrid cryogenic Yb:YAG amplifier

Hong¹,

Lai²,

Siddiqui³

et al. 2009

Opt. Express

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show abstract

“…In addition to achieving a highpower output, short-pulse lasers at specific wavelengths are also necessary for various applications. For example, the need for green picosecond pulsed lasers is also more widespread, as many materials in industrial processes absorb visible light more significantly than infrared light and in marine and space exploration, where the transmission medium absorbs less of the green wavelength [18][19][20][21]. Currently, picosecond pulses can be amplified by rod-tape photonic crystal fibers (PCF), which can achieve extremely high amplification efficiency, polarization preservation, and excellent beam quality output [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

178-W picosecond green laser with active beam-pointing stabilization

Zhang

Bai

Song³

et al. 2022

Front. Phys.

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Picosecond lasers with high average power and high beam quality have been widely used for precision processing and space exploration. In this study, we report a high-power picosecond green laser using a multistage Yb-doped rod-shaped photonic crystal fiber as an amplifier combined with a beam combination. The single amplification module achieves a 1,030 nm laser output of 146.8 W, and the maximum second harmonic generation (SHG) power is 92 W with a frequency conversion efficiency of 63.5%. The combined beam of the two SHGs resulted in a final output of 178 W with a repetition frequency of 24.07 MHz, pulse width of 50.1 ps, and beam quality factor of M2 = 1.16. Furthermore, an adaptive filter control method of a two-axis fast-steering mirror was applied to suppress the beam jitter to up to 45 Hz.

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“…High average power and high beam quality picosecond lasers have been investigated widely in a variety of fields, such as laser ablation [1][2][3][4][5][6][7], three dimensional micro-fabrication [8][9][10], bio-medical imaging [11,12], and nonlinear frequency extension [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%