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Second-Stokes YVO4/Nd:YVO4/YVO4 self-frequency Raman laser
Weidong Chen1, Yong Wei, Chenghui Huang
1Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. chenweidong@fjirsm.ac.cn
Optics Letters
|June 5, 2012
Summary
Researchers achieved efficient 1313 nm Raman laser emission using a novel diode-pumped YVO4 laser. This breakthrough in stimulated Raman scattering offers high optical conversion efficiency for advanced laser applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Nonlinear Optics
Background:
- Diode-pumped solid-state lasers are crucial for various applications.
- Stimulated Raman scattering (SRS) enables wavelength conversion in lasers.
- Thermal lensing effects can degrade laser performance, especially in high-power systems.
Purpose of the Study:
- To demonstrate efficient second-Stokes Raman laser emission at 1313 nm for the first time.
- To investigate the use of a composite crystal to mitigate thermal lensing in SRS lasers.
- To optimize laser parameters for high output power and conversion efficiency.
Main Methods:
- Utilized a diode-end-pumped, actively Q-switched YVO(4)/Nd:YVO(4)/YVO(4) laser operating at 1064 nm.
- Employed a double-end diffusion-bonded Nd:YVO(4) composite crystal to manage thermal lensing.
- Investigated self-frequency stimulated Raman scattering (SF-SRS) to generate the 1313 nm emission.
Main Results:
- Achieved efficient second-Stokes Raman laser emission at 1313 nm.
- Obtained a maximum average output power of 2.34 W at 1313 nm.
- Reached an optical-to-optical conversion efficiency of 16% with a pulse repetition rate of 40 kHz.
- Recorded a pulse width of 1.2 ns and a peak power of 49 kW.
Conclusions:
- The developed laser system represents a novel and efficient source for 1313 nm Raman laser emission.
- The use of a composite crystal effectively suppressed thermal lensing, enabling stable high-power operation.
- This work advances the field of solid-state Raman lasers and their potential applications.
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