Single longitudinal mode 486.1 nm wavelength laser generation from β-Ba2BO4 -optical parametric amplifier system for ocean detection

  1. Qihui Luo
  2. Jian Ma
  3. Zizheng Huang
  4. Tingting Lu
  5. Junxuan Zhang
  6. Haoda Ma
  7. Xiaolei Zhu
  8. Weibiao Chen
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Abstract

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 energy extraction efficiency of 35.4% and peak power density of 46.4 MW/cm 2 . The central wavelength of output laser pulse was 486.134 nm, which was well matched the H-β Fraunhofer line of solar spectrum, and the detected spectral linewidth was around 120 MHz.

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  1. Version published to 10.21203/rs.3.rs-5826037/v1 on Research Square