Hybrid CPA system comprised by fiber-silicate glass fiber-single crystal fiber with femtosecond laser power more than 90 W at 1 MHz

Li, Feng; Yang, Zhi; Lv, Zhiguo; Yufei, Duan; Wang, Nana; Yang, Yang; Li, Qianglong; Yang, Xiaojun; Wang, Yishan; Zhao, Wei

doi:10.1016/j.optlastec.2020.106291

Cited by 13 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The TCFBG parameters at this point were β2 = 48 ps 2 , β3 = -0.6 ps 3 and β4 = 0.01 ps 4 and the B-integral was 0.3π. The pulse temporal and spectral properties at this reference point are shown in Fig.…”

Section: Reference State At Low Pulse Energiesmentioning

confidence: 89%

See 1 more Smart Citation

Compensation of optical nonlinearities in a femtosecond laser system in a broad operation regime

Černe

Šušnjar

Petkovšek

2021

Optics & Laser Technology

View full text Add to dashboard Cite

Section: Reference State At Low Pulse Energiesmentioning

confidence: 89%

“…The seed pulses are temporally stretched to ~500 ps using a commercial tunable chirped fiber Bragg grating (TCFBG) from TeraXion, with β2 = 48 ps 2 , β3 = -0.6 ps 3 and β4 = 0.01 ps 4 , where 𝛽 2 and 𝛽 3 are defined as…”

Section: Methodsmentioning

confidence: 99%

Compensation of optical nonlinearities in a femtosecond laser system in a broad operation regime

Černe

Šušnjar

Petkovšek

2021

Optics & Laser Technology

View full text Add to dashboard Cite

“…This limitation has been alleviated to a considerable extent, by the exploiting of the well-known chirped pulse amplification (CPA) technology [13][14][15], with which the peak power of the laser pulse can be significantly reduced through temporally stretching the pulse to the sub-nanosecond regime. At present, with the leveraging of large mode area (LMA) Yb-doped fibers (YDFs) with dedicated structure design for suppressing the higher order mode contents and nonlinear effects [16][17][18][19][20][21][22][23], the average power of ultrafast laser that emitted from a single fiber has reached 830 W [16]. However, those LMA fibers are generally https://doi.org/10.1017/hpl.2023.12 Published online by Cambridge University Press difficult to be fusion spliced and spatial coupling of the laser signal are inevitable for constructing the high-power CPA system, of which the stability, flexibility and compactness would be highly compromised.…”

Section: Introductionmentioning

confidence: 99%

High-power femtosecond laser generation from an all-fiber linearly polarized chirped pulse amplifier

Wang

Li²,

Ren³

et al. 2023

High Pow Laser Sci Eng

View full text Add to dashboard Cite

An all-fiber high-power linear-polarized chirped pulse amplification (CPA) system is experimentally demonstrated. Through stretching the pulse duration to a full width of ~2 ns with two cascaded chirped fiber Bragg gratings (CFBGs), a maximum average output power of 612 W is achieved from a high gain Yb-doped fiber that has a core diameter of 20 μm with a slope efficiency of ~68% at the repetition rate of 80 MHz.At the maximum output power, the polarization degree is 92.5% and the M 2 factor of the output beam quality is ~1.29, and the slight performance degradations are attributed to the thermal effects in the main amplifier. By optimizing the B-integral of the amplifier and finely adjusting the higher order dispersion of one of the CFBGs, the pulse width is compressed to 863 fs at the highest power with a compression efficiency of 72%, corresponding to a maximum compressed average power of 440.6 W, single pulse energy of 5.5 μJ and peak power of about 6 MW 4.67MW. To the best of our knowledge, this is

show abstract

“…Although these systems offer some outstanding results in terms of power scaling, their relative complexity hinders their applicability in industrial laser applications. Another possibility for power scaling of fiber lasers is a hybrid laser design that, in addition to the fiber pre-amplifiers, implements an additional solid-state power-amplifier [21][22][23]. The main advantage of this approach is that the beam diameter in a solid-state amplifier is much larger than fiber amplifiers.…”

Section: Introductionmentioning

confidence: 99%

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

2021

View full text Add to dashboard Cite

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.

show abstract

Hybrid CPA system comprised by fiber-silicate glass fiber-single crystal fiber with femtosecond laser power more than 90 W at 1 MHz

Cited by 13 publications

References 17 publications

Compensation of optical nonlinearities in a femtosecond laser system in a broad operation regime

Compensation of optical nonlinearities in a femtosecond laser system in a broad operation regime

High-power femtosecond laser generation from an all-fiber linearly polarized chirped pulse amplifier

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

Contact Info

Product

Resources

About