Diode-pumped, continuous-wave Tm:YAIO3 laser

Area of Science:

• Laser Physics and Photonics
• Materials Science
• Quantum Electronics

Background:

• Thulium-doped lasers are crucial for various applications, but their efficiency can be limited by phenomena like self-quenching.
• Understanding spectroscopic parameters is essential for optimizing laser performance and predicting behavior.
• Yttrium aluminum perovskite (YAlO3) offers unique host properties for rare-earth ion doping.

Purpose of the Study:

• To construct and characterize a continuous-wave, diode-pumped, room-temperature Tm:YAlO3 laser.
• To compare experimental laser performance with a theoretical model.
• To investigate the quantum efficiency of thulium (Tm) self-quenching in the (3)H4 manifold.

Main Methods:

• Fabrication of a continuous-wave, diode-pumped Tm:YAlO3 laser operating at room temperature.
• Spectroscopic measurements of key parameters: pump band ((3)H4 manifold) lifetime, upper laser level ((3)F4 manifold) lifetime, and absorption coefficient.
• Comparison of experimental results with a developed theoretical laser model.

Main Results:

• Successful construction and characterization of the Tm:YAlO3 laser.
• Accurate measurement of spectroscopic parameters, including lifetimes and absorption coefficient.
• Calculation of the quantum efficiency for Tm self-quenching of the (3)H4 manifold based on experimental data.

Conclusions:

• The experimental results align well with the theoretical model, validating the model's predictive capabilities.
• The study provides crucial data on the spectroscopic properties of Tm:YAlO3, essential for laser design.
• Quantification of Tm self-quenching efficiency offers insights for optimizing laser performance and mitigating losses.