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Updated: Jun 23, 2026
09:10
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
A diode side-pumped KTiOAsO4 Raman laser.
Zhaojun Liu1, Qingpu Wang, Xingyu Zhang
1School of Information Science & Engineering, Shandong University, Jinan, Shandong 250100, PR China.
Optics Express
|April 29, 2009
Summary
A novel potassium titanyl arsenate (KTiOAsO4) Raman laser achieved efficient nanosecond first-Stokes generation at 1091.4 nm. This diode-pumped laser system demonstrated a 7.5% conversion efficiency, highlighting its potential for laser applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Diode-pumped solid-state lasers are crucial for various applications.
- Raman lasers offer wavelength flexibility through nonlinear frequency conversion.
- Potassium titanyl arsenate (KTiOAsO4) is a nonlinear optical crystal with potential for laser development.
Purpose of the Study:
- To realize a KTiOAsO4 Raman laser.
- To investigate efficient nanosecond first-Stokes generation.
- To evaluate the performance of a diode side-pumped acousto-optically Q-switched Nd:YAG laser system utilizing KTiOAsO4 crystals.
Main Methods:
- A KTiOAsO4 Raman laser was developed and integrated into a diode side-pumped acousto-optically Q-switched Nd:YAG laser setup.
- Three 30-mm-long KTiOAsO4 crystals were employed for efficient first-Stokes generation.
- Laser performance was characterized under specific diode power and repetition rate conditions.
Main Results:
- Efficient nanosecond first-Stokes generation at 1091.4 nm was successfully achieved.
- A first-Stokes power of 4.55 W was obtained under 60.9 W incident diode power and 4 kHz repetition rate.
- The diode-to-Stokes conversion efficiency reached 7.5%, with single pulse energy up to 1.14 mJ and peak power of 18.0 kW.
Conclusions:
- The KTiOAsO4 Raman laser, integrated within a Q-switched Nd:YAG laser, demonstrates efficient first-Stokes generation.
- The achieved conversion efficiency and output power indicate the viability of KTiOAsO4 for high-power laser sources.
- This work contributes to the advancement of nonlinear optical materials for laser applications.
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