High-efficiency and compact blue source: intracavity frequency tripling by using LBO and BBO without the influence of birefringence

1993/02/20 by Ruikun Wu
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Birefringence #Harmonic #High harmonic generation #Laser #Materials science #Nonlinear optics #Optics #Optoelectronics #Photorefractive and Nonlinear Optics #Physics #Resonator #Second-harmonic generation #Solid State Laser Technologies

paper · doi:10.1364/ao.32.000971

openalex publication_date 1993/02/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23

Abstract

A new intracavity frequency-tripled laser resonator design that circumvents the birefringence interference problems normally associated with a laser resonator with two intracavity nonlinear crystals is developed. Two hundred mW of UV laser output in a TEM(00) mode is obtained from an intracavity frequency-tripled Nd:YAG laser; the 250-Hz pulsed input does not exceed 400 W. LBO and BBO nonlinear crystals are utilized for second-harmonic generation and third-harmonic generation, respectively. The peak power of the UV output measures 90 kW.

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