Stabilization system of a photoinjector drive laser

Flanchec, V. Le; Blésès, J.P.; Striby, S.; Laget, J.P.

doi:10.1364/ao.36.008541

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Until now drive laser systems have used a FIFO method to obtain a flat output macropulse ͑e.g., Le Flanchec et al 8 and Early et al 9 ͒. Recently, the principle of PS in a drive laser system was mentioned by Nguyen et al, 10 although these authors do not give any information on their system.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the power and control of the shape of amplified trains of laser pulses

et al. 1997

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We have performed an optimization study on a train of laser pulses in a Nd:YLF master-oscillator power amplifier chain. Instead of using a flat train of input pulses and proper timing of the input pulses with respect to the pump pulse to keep the output pulse flat, we used a pulse-shaping technique. Then the maximum gain could be used, resulting in a 70% increase in output pulse energy. We constructed a special feed-forward loop to control the temporal shape of the train. We compare the results with a computational model based on the rate equations in the Nd:YLF amplifiers.

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Section: Introductionmentioning

confidence: 99%

Optimization of the power and control of the shape of amplified trains of laser pulses

et al. 1997

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“…Most of these demonstrations were based on low-noise mode-locked Er-fiber lasers [8][9][10][11][12][13]15] . Mode-locked solid-state lasers (Nd:YAG [16] , Yb:YAG [17] , Nd:YVO4 [18] , Nd:YLF [19,20] , and Ti:sapphire [21] ), however, are widely used in small-to-middle-scale accelerators. Therefore, high-precision synchronization of the RF signal to the mode-locked solid-state laser is highly desirable.…”

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confidence: 99%

fs-level laser–RF synchronization with a fiber-loop optical-microwave phase detector

Feng

Zha

et al. 2018

Chin. Opt. Lett.

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In order to improve the precision of the laser-radio-frequency (RF) synchronization system from sub-picosecond to femtosecond (fs), a synchronization system between a picosecond laser and a 1.3 GHz RF generator has been developed based on a fiber-loop optical-microwave phase detector (FLOM-PD). Synchronization with fs-level (3.8 fs) rms jitter, integrated from 10 Hz to 1 MHz, is achieved for the first time, to the best of our knowledge, in this kind of configuration. This system will be used for the superconducting RF accelerator at Peking University.

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“…For small- to mid-scale FELs, UED or Thomson-scattering sources, however, operating a separate OMO with fibre distribution links for laser-RF synchronization is often costly and unnecessary. Since such facilities use a mode-locked solid-state (such as Nd:YAG4, Nd:YLF5, Yb:YAG6 and Ti:sapphire789101112131415) laser as both a photocathode laser for electron pulse generation and a pump laser for pump-probe experiments, direct synchronization of the mode-locked solid-state laser to RF oscillator is highly desirable. Even in large-scale facilities, achieving precise synchronization between mode-locked solid-state laser and RF oscillator is an important and useful technique as well, for example, for synchronization of seed lasers in seeded X-ray FELs3.…”

mentioning

confidence: 99%

10-fs-level synchronization of photocathode laser with RF-oscillator for ultrafast electron and X-ray sources

Yang

Han

Shin

et al. 2017

Sci Rep

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Ultrafast electron-based coherent radiation sources, such as free-electron lasers (FELs), ultrafast electron diffraction (UED) and Thomson-scattering sources, are becoming more important sources in today’s ultrafast science. Photocathode laser is an indispensable common subsystem in these sources that generates ultrafast electron pulses. To fully exploit the potentials of these sources, especially for pump-probe experiments, it is important to achieve high-precision synchronization between the photocathode laser and radio-frequency (RF) sources that manipulate electron pulses. So far, most of precision laser-RF synchronization has been achieved by using specially designed low-noise Er-fibre lasers at telecommunication wavelength. Here we show a modular method that achieves long-term (>1 day) stable 10-fs-level synchronization between a commercial 79.33-MHz Ti:sapphire laser oscillator and an S-band (2.856-GHz) RF oscillator. This is an important first step toward a photocathode laser-based femtosecond RF timing and synchronization system that is suitable for various small- to mid-scale ultrafast X-ray and electron sources.

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Stabilization system of a photoinjector drive laser

Cited by 8 publications

References 6 publications

Optimization of the power and control of the shape of amplified trains of laser pulses

Optimization of the power and control of the shape of amplified trains of laser pulses

fs-level laser–RF synchronization with a fiber-loop optical-microwave phase detector

10-fs-level synchronization of photocathode laser with RF-oscillator for ultrafast electron and X-ray sources

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