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Efficient thin-disk Tm-laser operation based on Tm:KLu(WO4)2/KLu(WO4)2 epitaxies.

Sergei Vatnik¹, Ivan Vedin, Martha Segura

¹Institute of Laser Physics, Novosibirsk, Russia.

|February 3, 2012

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A novel thin-disk laser using Tm:KLu(WO4)2 epitaxies achieves 1850-1945 nm emission. This laser demonstrates high efficiency and ~6 W output power in continuous-wave operation.

Area of Science:

Laser Physics
Materials Science
Solid-State Photonics

Background:

Thin-disk laser architecture offers excellent thermal management and high-power potential.
Thulium-doped materials are crucial for generating near-infrared laser emission.
Epitaxial growth allows for precise control over laser crystal properties.

Purpose of the Study:

To develop a diode-pumped thin-disk laser utilizing Tm:KLu(WO4)2/KLu(WO4)2 epitaxies.
To investigate the laser performance in the 1850-1945 nm spectral range.
To optimize efficiency and output power for continuous-wave operation.

Main Methods:

Fabrication of Tm:KLu(WO4)2/KLu(WO4)2 epitaxial layers.
Diode-pumping of the thin-disk laser resonator.

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Characterization of emission spectra, slope efficiency, and output power.

Main Results:

Successful realization of a diode-pumped thin-disk laser.
Emission observed in the 1850-1945 nm spectral range for Tm-doping levels of 5-15 at. %.
Maximum slope efficiency of 47% and ~6 W continuous-wave output power achieved with 5 at. % Tm doping.

Conclusions:

Tm:KLu(WO4)2/KLu(WO4)2 epitaxies are a promising gain medium for efficient near-infrared thin-disk lasers.
The developed laser system shows potential for various spectroscopic and photonic applications.
High efficiency and output power demonstrate the viability of this material system for high-power laser development.