A. K. Potemkin, E. I. Gacheva, V. V. Zelenogorskii, E. V. Katin, I. E. Kozhevatov, V. V. Lozhkarev, G. A. Luchinin, D. E. Silin, E. A. Khazanov, G. V. Trubnikov, G. D. Shirkov, M. Kuriki, J. Urakawa, “Laser driver for a photocathode of an electron linear accelerator”, Kvantovaya Elektronika, 2010, Volume 40, Number 12,Pages <nobr>1123

This article is cited in 5 papers

Lasers and amplifiers

Laser driver for a photocathode of an electron linear accelerator

A. K. Potemkin^a, E. I. Gacheva^a, V. V. Zelenogorskii^a, E. V. Katin^a, I. E. Kozhevatov^a, V. V. Lozhkarev^a, G. A. Luchinin^a, D. E. Silin^a, E. A. Khazanov^a, G. V. Trubnikov^b, G. D. Shirkov^b, M. Kuriki^c, J. Urakawa^d

^a Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod
^b Joint Institute for Nuclear Research, Dubna, Moscow region
^c Hiroshima University, Japan
^d High Energy Accelerator Research Organization, Japan

Abstract: A laser system is designed for operation with a photocathode electron gun for a linear accelerator with the following parameters of radiation at a wavelength of 262 nm (the fourth harmonic of a Nd:YLF laser). The pulse trains (macropulses) with a repetition rate of 5 Hz and a duration of 900 μs consist of 8-ps micropulses with an energy of 1.4 μJ and a repetition rate of 2.708 MHz. This repetition rate is variable within ±32 kHz and is stabilised by an external signal with an accuracy of 10 Hz. Due to the use of a feedback-controlled acousto-optic modulator, the root-mean-square deviation of the micropulse energy in the first and second harmonics is 2.5% and 3.6%, respectively. Using the decaying branch of the dependence of the second-to-fourth harmonic conversion efficiency on the second harmonic intensity, we decreased the root-mean-square deviation of the energy of the fourth-harmonic micropulses to 2.3% at the first-to-fourth harmonic conversion efficiency of 27%.

PACS: 42.60.By, 42.55.Wd, 42.55.Rz, 42.65.Ky, 07.77.Ka

Received: 15.09.2010
Revised: 15.10.2010