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<p>A single longitudinal mode (SLM) 486.1&#xa0;nm blue pulsed laser was investigated by adopting a single-frequency distributed feedback laser (DFB) injected optical parametric oscillator (OPO) and optical parametric amplifier (OPA) structure, pumped by a 355&#xa0;nm ultraviolet SLM laser at pulse repetition rate of 200&#xa0;Hz. The maximum output pulse energy of 22.0&#xa0;mJ was obtained from this injection seeded OPO/OPA system, corresponding to an energy extraction efficiency of 35.4% and a peak power of 3.73&#xa0;MW. The central wavelength of output laser pulse was 486.134&#xa0;nm, which was well matched to the H-β Fraunhofer line of solar spectrum, and the detected spectral linewidth was around 120&#xa0;MHz.</p>

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Single longitudinal mode 486.1 nm wavelength laser generation from BBO-optical parametric amplifier system for ocean detection

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Qihui Luo,
  • Jian Ma,
  • Zizheng Huang,
  • Tingting Lu,
  • Junxuan Zhang,
  • Haoda Ma,
  • Xiaolei Zhu,
  • Weibiao Chen

摘要

A single longitudinal mode (SLM) 486.1 nm blue pulsed laser was investigated by adopting a single-frequency distributed feedback laser (DFB) injected optical parametric oscillator (OPO) and optical parametric amplifier (OPA) structure, pumped by a 355 nm ultraviolet SLM laser at pulse repetition rate of 200 Hz. The maximum output pulse energy of 22.0 mJ was obtained from this injection seeded OPO/OPA system, corresponding to an energy extraction efficiency of 35.4% and a peak power of 3.73 MW. The central wavelength of output laser pulse was 486.134 nm, which was well matched to the H-β Fraunhofer line of solar spectrum, and the detected spectral linewidth was around 120 MHz.