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Efficient 1521-nm Nd:GdVO4 Raman laser
1Department of Electrophysics, National Chiao Tung University, Hsinchu 30050, Taiwan. yfchen@cc.nctu.edu.tw
Optics Letters
|November 24, 2004
Summary
This study demonstrates an efficient compact diode-pumped laser generating 1521-nm light using stimulated Raman scattering. The laser achieves high average power and short pulse durations, suitable for various applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Nonlinear Optics
Background:
- Diode-pumped solid-state lasers are crucial for various applications.
- Efficient generation of specific wavelengths, like 1521 nm, is often challenging.
- Stimulated Raman scattering (SRS) offers a nonlinear optical pathway for wavelength conversion.
Purpose of the Study:
- To demonstrate an efficient compact diode-pumped actively Q-switched laser operating at 1521 nm.
- To utilize stimulated Raman scattering for achieving the target wavelength.
- To characterize the laser's performance in terms of average power, repetition rate, pulse width, and peak power.
Main Methods:
- Employing a diode-pumped actively Q-switched laser setup.
- Utilizing Neodymium-doped Gadolinium Vanadate (Nd:GdVO4) as the gain medium.
- Leveraging stimulated Raman scattering (SRS) for wavelength generation at 1521 nm.
Main Results:
- Generation of 1521-nm average power exceeding 1.18 W at a 20 kHz repetition rate.
- Achieved with a relatively low diode pump power of 13.6 W.
- At a 5 kHz repetition rate, pulse widths were under 5 ns with peak powers over 20 kW.
Conclusions:
- An efficient and compact diode-pumped actively Q-switched Nd:GdVO4 laser at 1521 nm was successfully demonstrated.
- The use of stimulated Raman scattering proved effective for generating the desired wavelength.
- The laser system exhibits promising performance for applications requiring high peak power and specific wavelengths.