High peak and average power Ti:sapphire thin disk amplifier with extraction during pumping

Chvykov, V.; Cao, Huabao; Nagymihály, Roland S.; Kalashnikov, M. P.; Khodakovskiy, Nikita; Glassock, Richard; Ehrentraut, L.; Schnuerer, M.; Osvay, K.

doi:10.1364/ol.41.003017

Cited by 31 publications

(12 citation statements)

References 13 publications

(16 reference statements)

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“…The combination of EDP technique with TD Ti:Sa crystals for power amplifiers [39,41,43] also lets the ultra-high peak power amplifiers increase as well as the average power. In a proofof-principle experiment, high-energy broadband amplification in a room temperature watercooled EDP-TD head was demonstrated at a 10 Hz repetition rate instead of performing a traditional cryogenically cooled multipass scheme.…”

Section: Resultsmentioning

confidence: 99%

“…The EDP-technique was suggested to be applied for TD crystals [39] and successfully tested [41] mostly in powerful final stages of ultra-high peak power laser systems with hundreds of TWs to tens of PWs power, which are operating in the saturation regime. The overall gain of the amplifier can be kept as small as ~10-20, since the extraction of energy is a major importance.…”

Section: High Repetition Rate Of Ultra-high Peak Power Laser Systemsmentioning

confidence: 99%

“…Proof-of-principle experiment of the operation of a broadband EDP-TD amplifier in a 100 TW CPA laser system was presented in Ref. [41]. The amplifier head was fully characterized, including measurement and modeling of the temperature distribution, dynamics of amplification, and wave front of the amplified pulses.…”

Section: High Power Laser Systemsmentioning

confidence: 99%

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New Generation of Ultra-High Peak and Average Power Laser Systems

Chvykov¹

2018

High Power Laser Systems

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Ultra-high peak power laser systems are applicable in new and very promising areas, such as charged particles acceleration and inertial confinement of the fusion nuclear reaction. First one could be used as effective secondary source of Y and X-ray beams, which have multiple applications in industry and medicine if repetition rate will be increased, the last one could serve as a source of unlimited energy after transforming in to the power plants. New technologies are able to significantly increase the output peak power due to extraction of the higher energy extracting during pumping (EDP). The record of extracted energy about 200 J and output power of 5 PW were reached with this technique. Polarization Encoded Chirped Pulse Amplification (PE-CPA) technique as well as two stages of compression produced shorter pulse duration also are presented in this chapter. Besides, the capability of combination of the EDP method and the Thin Disk (EDP-TD) applied to Ti:Sa amplifiers to produce the higher repetition rate in the PW-class laser systems, as well as the results of the proof-of-principal experiments will be demonstrated.

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Section: Resultsmentioning

confidence: 99%

Section: High Repetition Rate Of Ultra-high Peak Power Laser Systemsmentioning

confidence: 99%

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New Generation of Ultra-High Peak and Average Power Laser Systems

Chvykov¹

2018

High Power Laser Systems

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“…Среди активно развивающихся направлений лазерной физики, выделяют создание лазерных систем с высокой средней и пиковой мощностью на активных средах, активированных ионами Yb [1-4], в том числе с волоконными элементами [5][6]. Такие системы используются как в прикладных целях [7], так и для проведения научно-исследовательских экспериментов по созданию источников для накачки параметрических усилителей [8], по генерации излучения рентгеновского и гамма диапазонов [9], в том числе последовательностей аттосекундных импульсов [10].…”

Section: Introductionunclassified

The Investigation of Thermal Lens Properties in the Active Element of Laser Amplifier With High Power Diode Pump

Kuptsov

Лаптев

Петров

et al. 2019

Interexpo GEO-Siberia

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A femtosecond laser system with a pulse repetition rate up to 1 kHz is being developed at the Institute of Laser Physics of the SB RAS. The key component of the system is the channel of laser amplification based on media doped with Yb3+ ions. The designed average output power of the channel is 300 W. Thermal effects in high-power laser amplifiers are decisive for the parameters of the radiation at the output of system. In this paper the results of experimental measurements of thermal lens focal distance dependence in Yb:YAG active element on diode pump power using geometric method are given. Calculation of the dependence thermal lens focal distance on the power of pump power and a comparison with experimental data are given.

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“…The active medium design and material choice can be optimized to decrease the thermal lens, e.g., in thin-disk lasers [9,10,11,12]. Still, the higher pump powers and the increased beam size needed for energy and power scaling, make the thermal lens in the active medium the most severe limitation to be overcome [13,6,14]. For these reasons an optical layout has to be chosen that minimizes the changes of the beam propagation for variations of the thermal lens of the active medium.…”

Section: Introductionmentioning

confidence: 99%

Multipass amplifiers with self-compensation of the thermal lens

Schuhmann¹,

Kirch²,

Marszałek³

et al. 2018

Appl. Opt.

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We present a novel architecture for a multi-pass amplifier based on a succession of optical Fourier transforms and short propagations that shows a superior stability for variations of the thermal lens compared to state-of-the-art 4fbased amplifiers. We found that the proposed multi-pass amplifier is robust to variations of the active medium dioptric power. The superiority of the proposed architecture is demonstrated by analyzing the variations of the size and divergence of the output beam in form of a Taylor expansion around the design value for variations of the thermal lens in the active medium. The dependence of the output beam divergence and size is investigated also for variations of the number of passes, for aperture effects in the active medium and as a function of the size of the beam on the active medium. This architecture makes efficient use of the transverse beam filtering inherent in the active medium to deliver a beam with excellent quality (TEM00).

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High peak and average power Ti:sapphire thin disk amplifier with extraction during pumping

Cited by 31 publications

References 13 publications

New Generation of Ultra-High Peak and Average Power Laser Systems

New Generation of Ultra-High Peak and Average Power Laser Systems

The Investigation of Thermal Lens Properties in the Active Element of Laser Amplifier With High Power Diode Pump

Multipass amplifiers with self-compensation of the thermal lens

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