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Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation
Published on: May 23, 2025
Note: self Q-switched Nd:YVO4 laser at 914 nm
Pradeep K Gupta1, Amarjeet Singh, Sunil K Sharma
1Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore, MP 452013, India.
The Review of Scientific Instruments
|May 8, 2012
Summary
This study demonstrates stable self Q-switching in a quasi-three-level Nd:YVO(4) laser at 914 nm, achieving 600 mW average power with 10 μJ pulses. The laser utilizes re-absorption loss for efficient pulsed operation.
Area of Science:
- Laser Physics
- Solid-State Lasers
Background:
- Quasi-three-level lasers present challenges due to re-absorption loss.
- Self Q-switching offers a compact and efficient method for pulsed laser operation.
Purpose of the Study:
- To demonstrate stable self Q-switching operation in a 914 nm Nd:YVO(4) laser.
- To investigate the effect of doping concentration on laser performance.
Main Methods:
- Utilized a Nd:YVO(4) crystal with 0.3 at.% doping concentration.
- Exploited saturable re-absorption loss for self Q-switching.
- Analyzed laser performance using a rate equation model.
Main Results:
- Achieved stable self-pulsing operation at 914 nm.
- Obtained an average output power of approximately 600 mW at 30 W incident pump power.
- Measured individual pulse energy of 10 μJ and a Full Width at Half Maximum (FWHM) pulse duration of 460 ns.
Conclusions:
- Demonstrated the feasibility of self Q-switching in Nd:YVO(4) lasers at 914 nm.
- Rate equation model simulations showed good agreement with experimental results.
- The study highlights the potential of this configuration for generating pulsed laser output.
