Efficient continuous-wave self-frequency-doubling green diode-pumped Yb:YAl(3)(BO(3))(4) lasers

Area of Science:

• Laser physics
• Solid-state lasers
• Nonlinear optics

Background:

• Development of efficient solid-state lasers is crucial for various scientific and industrial applications.
• Self-frequency-doubled lasers offer compact and efficient solutions for generating visible laser light.
• Yb-doped materials are promising for diode-pumped laser systems due to their favorable spectroscopic properties.

Purpose of the Study:

• To investigate the performance of Yb:YAl(3)(BO(3))(4) crystal for efficient continuous-wave (cw) self-frequency-doubled green laser generation.
• To evaluate the conversion efficiencies and tunability of the developed laser system.
• To explore the potential of this material for diode-pumped green laser sources.

Main Methods:

• Pumping a Yb:YAl(3)(BO(3))(4) crystal with a fiber-coupled 976-nm laser diode.
• Employing a continuous-wave (cw) laser operation mode.
• Utilizing a quartz birefringent filter for tuning the output wavelength.
• Measuring incident pump power, green output power, and electrical input power to determine conversion efficiencies.

Main Results:

• Achieved 160 mW of cw self-frequency-doubled green laser output.
• Obtained an incident-pump-power-to-green-output-power conversion efficiency exceeding 11.3%.
• Reached an electrical-input-to-green-output conversion efficiency of 3.9%.
• Demonstrated tunable green output ranging from 513.0 nm to 545.8 nm.

Conclusions:

• Yb:YAl(3)(BO(3))(4) crystal is an effective material for efficient cw self-frequency-doubled green laser generation.
• The developed laser system exhibits high conversion efficiencies, making it suitable for practical applications.
• The demonstrated tunability broadens the potential use cases for this laser source.