High average power effective pump source at 1 kHz repetition rate for OPCPA system

Michailovas, Kirilas; Smilgevičius, V.; Michailovaś, Andrejus

doi:10.3952/physics.v54i3.2954

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…In recent years, various types of high-power picosecond laser systems via different cooling technologies have been constructed. The high-power laser systems via rod gain medium pulses with 75 mJ and 64 pS at 300 Hz [5], 80 mJ and 50 pS at 1 kHz [6], 130 mJ and 95 pS at 1 kHz [7], 64.8 mJ and 15 ps at 1 kHz [8], 363 mJ and 63 ps at 100 Hz [9], 50 mJ and 100 ps at burst mode 1 kHz [10], and with 131.83 µJ and 16.9 ps at 496.85 kHz were demonstrated with the gain mediums of Nd:YAG or Nd:YVO 4 [11]. In the above-mentioned systems, the output power of the regenerative amplifier stage is usually about 2 W at 1 kHz.…”

Section: Introductionmentioning

confidence: 99%

Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

et al. 2020

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Compact, stable, high-power and high repetition rate picosecond laser systems are excellent sources for optical parametric chirped pulse amplification systems and laser satellite ranging systems. Compared with the traditional complex high-power amplifier, this article reports a compact high-power picosecond laser system at a repetition rate of 1 kHz based on Nd:YAG bulk crystal. The thermal lens effect limits the regenerative amplifier to directly output higher energy. For this reason, multi-stage traveling-wave amplifiers are usually used to gradually increase the laser pulse energy. So as to achieve a compact structure, a regenerative amplifier that can output higher power at 1 kHz is designed in the laser system. The regenerative amplifier can output the power of 6.5 W at the pump power of 41.5 W; the beam quality of M2 factor was about 1.3. A more flexible thermal depolarization compensation structure is applied in the side-pumped amplifier, which can effectively compensate for thermal lens effect and thermal depolarization at different pump powers. Finally, the laser pulse can achieve an output power higher than 50 W at 1 kHz after passing through an end-pumped traveling-wave amplifier and a side-pumped traveling wave amplifier.

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Section: Introductionmentioning

confidence: 99%

Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

et al. 2020

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“…However, due to the small volume of the active medium, the pulse energy of a sub-nanosecond laser using bounce geometry is less than 1 mJ. In comparison, Nd 3+ -doped lasers based on bulk crystal may acquire high pulse energy at the kHz level [19][20][21]. A sub-nanosecond single frequency MOPA laser system operating at 500 Hz was reported, which generated pulses with a width of 830 ps, energy of 13 mJ, peak power of 15.7 MW, and M 2 < 1.4 [22].…”

Section: Introductionmentioning

confidence: 99%

A High Peak Power and High Beam Quality Sub-Nanosecond Nd:YVO4 Laser System at 1 kHz Repetition Rate without SRS Process

et al. 2019

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We present a compact sub-nanosecond diode-end-pumped Nd:YVO 4 laser system running at 1 kHz. A maximum output energy of 65.4 mJ without significant stimulated Raman scattering (SRS) process was obtained with a pulse duration of 600 ps, corresponding to a pulse peak power of 109 MW. Laser pulses from this system had good beam quality, where M 2 < 1.6, and the excellent signal to noise ratio was more than 42 dB. By frequency doubling with an LBO crystal, 532 nm green light with an average power of 40.5 W and a power stability of 0.28% was achieved. The diode-end-pumped pump power limitation on a high peak power amplifier caused by the SRS process and thermal fracture in bulk Nd:YVO 4 crystal is also analyzed.

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“…Higher pulse energies are required for many applications [4][5][6]. As previously reported [12], multiple stages of side-pumped amplifiers were used to obtain 80 mJ picosecond laser pulses. However, due to the inhomogeneity in the directions of the side-pumped modules, the beam quality (M 2 > 4) was not good enough for some applications.…”

Section: Regenerative Amplifiermentioning

confidence: 99%

“…In the past years, several designs of high power picosecond lasers have been studied. Using rod materials, pulses with 1.5 J energy and 110 ps duration at 10 Hz [10], with 130 mJ and 64 ps at 300 Hz [11], with 80 mJ and 50 ps at 1 kHz, and with 145 W average power and 200 ps duration at 3 kHz were demonstrated with Nd-doped YVO4 and YAG [12,13]; pulses with 1 J and 5 ps at 100 Hz [4], with 115 mJ before compressing at 200 Hz [14], and with 58.5 mJ at 1 kHz were also recently reported with cryogenically cooled bulk Yb:YAG [9]. Using thin-disk technology, a 300 W picosecond laser operating at 10 kHz was demonstrated with 1.6 ps in 2013, and a 1.3 kW thin-disk multi-pass amplifier running at 300 kHz with sub-8 ps was reported in 2014 [15,16].…”

Section: Introductionmentioning

confidence: 99%

Diode-Pumped High Energy and High Average Power All-Solid-State Picosecond Amplifier Systems

Liu

Wang

et al. 2015

Applied Sciences

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We present our research on the high energy picosecond laser operating at a repetition rate of 1 kHz and the high average power picosecond laser running at 100 kHz based on bulk Nd-doped crystals. With diode-pumped solid state (DPSS) hybrid amplifiers consisting of a picosecond oscillator, a regenerative amplifier, end-pumped single-pass amplifiers, and a side-pumped amplifier, an output energy of 64.8 mJ at a repetition rate of 1 kHz was achieved. An average power of 37.5 W at a repetition rate of 100 kHz pumped by continuous wave laser diodes was obtained. Compact, stable and high power DPSS laser amplifier systems with good beam qualities are excellent picosecond sources for high power optical parametric chirped pulse amplification (OPCPA) and high-efficiency laser processing.

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High average power effective pump source at 1 kHz repetition rate for OPCPA system

Cited by 11 publications

References 13 publications

Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

A High Peak Power and High Beam Quality Sub-Nanosecond Nd:YVO4 Laser System at 1 kHz Repetition Rate without SRS Process

Diode-Pumped High Energy and High Average Power All-Solid-State Picosecond Amplifier Systems

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