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High power picosecond vortex laser based on a large-mode-area fiber amplifier
Yuichi Tanaka1, Masahito Okida, Katsuhiko Miyamoto
1Graduate School of Advanced Integration Science, Chiba University, Chiba, 263-8522, Japan.
Optics Express
|August 6, 2009
Summary
Researchers generated picosecond vortex pulses using a stressed large-mode-area fiber amplifier. This novel method achieved 8.5 W of picosecond output power with high peak power.
Area of Science:
- Optics and Photonics
- Fiber Lasers
- Nonlinear Optics
Background:
- Vortex pulses are crucial for applications in optical trapping and microscopy.
- Generating high-power, short-duration vortex pulses presents significant technical challenges.
Purpose of the Study:
- To demonstrate the first-ever production of picosecond vortex pulses from a stressed large-mode-area fiber amplifier.
- To characterize the output power and peak power of these generated pulses.
Main Methods:
- Utilized a stressed large-mode-area fiber amplifier.
- Employed picosecond pulse generation techniques.
- Investigated the impact of stress on fiber properties for vortex pulse formation.
Main Results:
- Successfully produced picosecond vortex pulses.
- Achieved an output power of 8.5 W.
- Obtained a peak power of approximately 12.5 kW at a pump power of 29 W.
Conclusions:
- The stressed large-mode-area fiber amplifier is a viable platform for generating high-power picosecond vortex pulses.
- This advancement opens new possibilities for applications requiring controlled light structures at high peak powers.
