Diode-pumped continuous-wave Nd3+:YAlO3 intracavity-doubled red laser

Zou, Jing; Wang, L. R.

doi:10.1134/s1054660x12020314

Cited by 3 publications

(1 citation statement)

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“…Intra-cavity frequency conversion has the advantage of low threshold, compact structure and high conversion efficiency, because this structure can improve the intensity density of fundamental and harmonic wave radiation in the nonlinear crystal. The intra-cavity frequency conversion method has been used for generating some wavelength like 670 nm [10], 532 nm [11], 355 nm [12], 305 nm [13] and so on. With regard to 355 nm laser, in 1999, Roiss et al reported 355 nm picosecond pulses of 10 ps duration with 0.5 mW average power at 150 MHz repetition rate [14].…”

Section: Laser Physics Lettersmentioning

confidence: 99%

High stable, high efficient ultraviolet laser with angle-phase-mismatching compensation by adjusting temperature of the nonlinear crystals

Yang

Wang

et al. 2017

Laser Phys. Lett.

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We demonstrated an ultraviolet laser at 355 nm using a type-I and a type-II phase-matching nonlinear optical crystal of LiB 3 O 5 (LBO). A method of adjusting temperature for compensation is presented. The crystal temperature is controlled by proportional integral derivative (PID) thermal controllers with a ±0.01 °C resolution. The value of wave vector mismatch, distance of light propagation in nonlinear crystals, effective nonlinear coefficient, theoretical analysis and calculation of conversion efficiency versus temperature are discussed. The experimental results show that the average output power of the 355 nm laser is 1.24 W with the pump power of 13.33 W, when the repetition frequency is 15 kHz. The pulse duration is 9.8 ns, and the beam quality factors are of M x 2 = 1.8, M y 2 = 1.7. The conversion efficiency from 808 nm to 355 nm laser is 9.3%, which nearly reaches the optimum value reported so far and is limited by the wavelength mismatch between the pumping and absorbing lasers. The 355 nm output power instability of the laser device is 0.45% in 2 h. A compact no-watercooling ultraviolet laser with high stability and high efficiency is obtained.

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