Compact 20 W femtosecond laser system based on fiber laser seeder, Yb:YAG rod amplifier and chirped volume Bragg grating compressor

Veselis, Laurynas; Bartulevičius, Tadas; Madeikis, Karolis; Michailovaś, Andrejus; Rusteika, N.

doi:10.1364/oe.26.031873

Cited by 33 publications

(7 citation statements)

References 21 publications

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“…The temperature tuning of the CFBG is a simple way to make the dispersion match, which is demonstrated by Julijanas Želudevičius et al [24]. Some research papers proved its effectiveness [25][26][27] and obtained a high-energy, high-power femtosecond laser output with a pulse energy 104 µJ, an average power of 20.8 W and a pulse duration of 764 fs.…”

Section: Introductionmentioning

confidence: 96%

High-energy femtosecond laser system based on a fiber laser seeder, Yb:YAG single crystal fiber and chirped volume Bragg grating

Wang

Yang

et al. 2020

Laser Phys. Lett.

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A high-energy chirped pulse amplification system based on a Yb doped fiber seeder, two-stage single crystal fiber (SCF) amplifier with a simple single-pass structure is demonstrated in this work. An amplified power of 52.2 W with a beam quality of less than 1.3 at 200 kHz is obtained, to our best knowledge, this is the highest power obtained with a single-pass amplification structure of the SCF with the energy of hundreds of microjoules. An excellent power stability of 0.32% is obtained. Dispersion between the chirped fiber Bragg grating (CFBG) stretcher and the chirped volume Bragg grating compressor is matched via the use of a self-made temperature tuning device of CFBG. As a result, a pulse duration of 740 fs and a compressed power of 31.4 W are obtained at a repetition rate of 200 kHz. In order to assess the influence of pulse duration induced by the nonlinearity during the amplification and increase the output pulse energy, the repetition rate of the self-made fiber seeder is changed to 100 kHz. A compressed power of 28.4 W and a pulse width of 858 fs are obtained, corresponding to a pulse energy of 284 µJ and a peak power of 331 MW. This compact and high-energy femtosecond laser system will find various applications in both scientific research and industrial implementation.

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Section: Introductionmentioning

confidence: 96%

High-energy femtosecond laser system based on a fiber laser seeder, Yb:YAG single crystal fiber and chirped volume Bragg grating

Wang

Yang

et al. 2020

Laser Phys. Lett.

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“…Volume Bragg gratings (VBG) are often used in the selection of laser spectral lines in recent years due to their extremely sensitive wavelength and angle selectivity. [24][25][26][27] In 2018, E. R. Hale et al reported a novel dualchannel Tm:YLF laser composed of two VBGs for narrowband feedback and a common broadband output coupling mirror. By adjusting the angle of the VBG, the output power of 11 W was obtained.…”

Section: Introductionmentioning

confidence: 99%

The single‐wavelength 561 nm laser based on reflective volume Bragg grating

Chang

Yao

et al. 2022

Micro & Optical Tech Letters

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This article presents 561 nm single-wavelength laser by laser diode endpumped Nd:YAG crystal. The reflective volume Bragg grating is used as the output coupling mirror to effectively select the center wavelength of 1123 nm. The single wavelength laser output at 561 nm is obtained by intracavity frequency doubling via LBO crystal cut in accordance with Type I phase matching condition. When the pump power is 4 W, the output power reaches 229.6 mW, and the power instability is less than 3% within 5 min. Experiments show that the reflective volume Bragg grating acts as both a frequency selection element and an output coupling mirror, which simplifies the resonator structure and improves the laser output power.

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“…It was recently shown that a tunable chirped fiber Bragg grating (TCFBG) can efficiently compensate nonlinear phase up to 4π [12]. As a TCFBG can also be used as a pulse stretcher in a chirped pulse amplification technique (CPA), its use for nonlinear phase compensation offers a clear advantage in terms of compactness and robustness compared to the use of spatial light modulators (SLM-s) or other pulse-shaping techniques [30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Nonlinear Phase Compensation in a Femtosecond Hybrid Laser with Varying Pulse Repetition Rate

2021

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In this manuscript, an implementation of a tunable nonlinear phase compensation method is demonstrated on a typical femtosecond hybrid laser consisting of a fiber pre-amplifier and an additional solid-state amplifier. This enables one to achieve constant laser pulse parameters over a wide range of pulse repetition rates in such a laser. As the gain in the solid-state amplifier is inversely proportional to the input power, the shortfall in the solid-state gain at higher repetition rates must be compensated for with fiber pre-amplifier to ensure constant pulse energy. This increases the accumulated nonlinear phase and consequently alters the laser pulse parameters such as pulse duration and Strehl ratio. To overcome this issue, the nonlinear phase must be compensated for, and what is more it should be compensated for to a different extent at different pulse repetition rates. This is achieved with a tunable CFBG, used also as a pulse stretcher. Using this concept, we demonstrate that constant laser pulse parameters such as pulse energy, pulse duration and Strehl ratio can be achieved in a hybrid laser regardless of the pulse repetition rate.

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Compact 20 W femtosecond laser system based on fiber laser seeder, Yb:YAG rod amplifier and chirped volume Bragg grating compressor

Cited by 33 publications

References 21 publications

High-energy femtosecond laser system based on a fiber laser seeder, Yb:YAG single crystal fiber and chirped volume Bragg grating

High-energy femtosecond laser system based on a fiber laser seeder, Yb:YAG single crystal fiber and chirped volume Bragg grating

The single‐wavelength 561 nm laser based on reflective volume Bragg grating

Adaptive Nonlinear Phase Compensation in a Femtosecond Hybrid Laser with Varying Pulse Repetition Rate

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