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Frequency-doubled passively Q-switched microchip laser producing 225 ps pulses at 671 nm
Optics Letters
|November 15, 2016
Summary
We developed a 671 nm picosecond laser source for high-energy pulse applications. This laser offers a practical alternative for techniques like time-gated Raman spectroscopy.
Area of Science:
- Optics and Photonics
- Laser Physics
- Spectroscopy
Background:
- Picosecond pulsed lasers are crucial for advanced spectroscopic techniques.
- Developing compact and efficient laser sources remains an active area of research.
- Existing sources may not meet the specific energy and wavelength requirements for certain applications.
Purpose of the Study:
- To report a novel 671 nm laser source.
- To characterize its performance in terms of pulse duration, average power, and repetition rate.
- To highlight its potential utility in demanding applications like time-gated Raman spectroscopy.
Main Methods:
- Utilized a SESAM Q-switched Nd:YVO4 microchip master oscillator operating at 1342 nm.
- Employed a dual-stage Nd:YVO4 power amplifier to boost the laser output.
- Frequency-doubled the 1342 nm output to 671 nm using a periodically poled lithium niobate crystal.
Main Results:
- Achieved a 671 nm laser source emitting 225 picosecond (ps) pulses.
- Obtained an average output power of 55 milliwatts (mW).
- Operated at a repetition rate of 444 kilohertz (kHz).
Conclusions:
- The developed laser source offers a practical solution for applications needing high-energy picosecond pulses.
- Its performance characteristics make it suitable for time-gated Raman spectroscopy.
- This work contributes to the advancement of laser technology for scientific instrumentation.
