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Tunable continuous-wave laser at quasi-three-level with a disordered Nd:LGS crystal
Qing Wang1, Zhiyi Wei, Yongdong Zhang
1Laboratory of Optical Physics, Institute of Physics, Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China.
Optics Letters
|May 20, 2011
Summary
A novel tunable continuous-wave laser using neodymium-doped lanthanum glass ceramic (Nd(3+):LGS) was developed. This laser operates at 904 nm, achieving 403 mW output power and demonstrating wavelength tunability across a 6.8 nm range.
Area of Science:
- Laser Physics
- Materials Science
- Solid-State Lasers
Background:
- Neodymium-doped crystals are crucial for laser applications.
- Developing tunable lasers is essential for various spectroscopic and photonic technologies.
- Disordered crystals offer unique optical properties for laser design.
Purpose of the Study:
- To demonstrate a diode-pumped tunable continuous-wave (CW) laser based on a quasi-three-level transition.
- To investigate the laser performance and tunability of a neodymium-doped lanthanum glass ceramic (Nd(3+):LGS) crystal.
- To achieve laser operation and wavelength tuning on the Nd(3+) (4)F(3/2)-(4)I(9/2) transition.
Main Methods:
- Utilized a diode-pumped V-type cavity configuration.
- Employed a disordered Nd(3+):LGS crystal as the gain medium.
- Inserted an etalon for wavelength tuning within the laser cavity.
Main Results:
- Achieved a maximum output power of 403 mW at a central wavelength of 904 nm.
- Obtained a slope efficiency of 29.7%.
- Demonstrated wavelength tuning from 899.8 nm to 906.6 nm, a range of 6.8 nm.
Conclusions:
- Successfully demonstrated the first tunable laser based on the Nd(3+) (4)F(3/2)-(4)I(9/2) transition in doped crystals.
- The Nd(3+):LGS crystal exhibits promising properties for developing tunable solid-state lasers.
- The achieved performance highlights the potential of disordered crystals in laser engineering.
