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Gain-switched pulsed operation of microchip lasers
Optics Letters
|September 18, 2009
Summary
Microchip lasers achieved ultrashort, single-frequency pulses. Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) lasers produced 760 picosecond pulses, while Lithium Neodymium Tetraphosphate (LiNdP(4)O(12)) lasers generated 80 picosecond pulses.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Single-frequency lasers are crucial for various applications requiring precise wavelength control.
- Gain-switched pulsed lasers offer high peak power and short pulse durations.
- Microchip laser technology enables compact and efficient laser systems.
Purpose of the Study:
- To investigate the generation of single-frequency, gain-switched pulses from microchip lasers.
- To compare the pulse durations achievable with different laser materials, specifically Nd:YAG and LNP.
- To demonstrate the potential of microchip lasers for producing ultrashort optical pulses.
Main Methods:
- Utilized microchip laser cavities incorporating Nd:YAG and LiNdP(4)O(12) (LNP) gain media.
- Employed gain-switching technique to generate pulsed laser output.
- Measured the pulse width using a fast photodetector and sampling oscilloscope.
Main Results:
- Achieved single-frequency, gain-switched pulses with a Full Width at Half Maximum (FWHM) of 760 picoseconds (psec) for Nd:YAG.
- Generated ultrashort single-frequency pulses with a FWHM of 80 psec for LNP.
- Demonstrated significant reduction in pulse duration by using LNP compared to Nd:YAG.
Conclusions:
- Microchip laser technology is capable of producing high-quality, single-frequency, gain-switched pulses.
- LiNdP(4)O(12) (LNP) is a promising material for generating significantly shorter pulses than Nd:YAG in microchip lasers.
- These results highlight the potential for compact, high-performance pulsed laser sources.
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