A New Walk-Off Compensating BBO Device with Thinner-Plate-Stacked Structure Fabricated by Room-Temperature Bonding

Onda, Tomomi; Matsumoto, Shinnosuke; Shoji, Ichiro

doi:10.1364/nlo.2013.ntu3b.1

Cited by 1 publication

(1 citation statement)

References 5 publications

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“…For FHG using BBO crystal, the large walk-off angle [8] caused by BBO crystal's large birefringence limits the conversion efficiency and makes the transverse profile of UV laser beam far from Gaussian distribution. This problem can be solved by using a walk-off compensation system, where two or more crystals having the same cut and length [9][10][11] are arranged with the crystal optic axes in alternating directions (see Fig. 5).…”

Section: Harmonic Generation Systemmentioning

confidence: 99%

Drive laser system for the DC-SRF photoinjector at Peking University

Wang¹,

Huang²,

Lin³

et al. 2016

Chinese Phys. C

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Photoinjectors are widely used for linear accelerators as electron sources to generate high-brightness electron beam. Drive laser, which determines the timing structure and quality of the electron beam, is a crucial device of photoinjector. A new drive laser system has been designed and constructed for the upgraded 3.5-cell DC-SRF photoinjector at Peking University. The drive laser system consists of a 1064 nm laser oscillator, a fourstage amplifier, the second and fourth harmonic generators, the optical system to transfer the UV pulses to the photocathode, and the synchronization system. The drive laser system has been successfully applied in the stable operation of DC-SRF photoinjector and its performance meets the requirements. 266 nm laser with an average power close to 1W can be delivered to illuminate the Cs2Te photocathode and the instability is less than 5% for long time operation. The design consideration for improving the UV laser quality, a detailed description of laser system, and its performance are presented in this paper.

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