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Efficient 1 W continuous-wave diode-pumped Er,Yb:YAl3(BO3)4 laser.
Nikolai A Tolstik1, Sergey V Kurilchik, Victor E Kisel
11Institute for Optical Materials and Technologies, Belarus National Technical University, 65 Nezavisimosti Avenue, Building 17, Minsk, Belarus. tolstik@bntu.by
Optics Letters
|November 21, 2007
Summary
We demonstrated a high-power continuous-wave diode-pumped laser using Er:Yb:YAl3(BO3) crystal, achieving 1W output power and 35% slope efficiency at 1602 nm.
Area of Science:
- Materials Science
- Laser Physics
- Spectroscopy
Background:
- Erbium (Er3+) and Ytterbium (Yb3+) co-doped materials are crucial for developing efficient solid-state lasers.
- Yttrium aluminum borate (YAl3(BO3)4) offers a promising host matrix due to its thermal and mechanical properties.
Purpose of the Study:
- To investigate the spectroscopic properties of Er:Yb:YAl3(BO3) crystal.
- To demonstrate continuous-wave (CW) diode-pumped laser operation of this material.
- To assess the energy transfer efficiency between Yb3+ and Er3+ ions.
Main Methods:
- Spectroscopic analysis including absorption and stimulated emission spectra.
- Measurement of emission lifetimes.
- Determination of Yb3+ to Er3+ energy transfer efficiency.
- CW diode-pumped laser oscillation experiments.
Main Results:
- Characterized absorption and emission spectra of Er:Yb:YAl3(BO3).
- Determined emission lifetimes and energy transfer efficiency.
- Achieved CW laser operation at 1602, 1555, and 1531 nm.
- Obtained a maximum output power of 1W with a slope efficiency of up to 35%.
Conclusions:
- Er:Yb:YAl3(BO3) crystal is a viable material for high-power CW laser applications.
- Efficient energy transfer from Yb3+ to Er3+ ions supports laser operation.
- The demonstrated performance highlights potential for infrared laser development.
