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Picosecond pulse generation in Nd:BEL with a high-frequency acousto-optic mode locker
Optics Letters
|September 25, 2009
Summary
Researchers achieved 1.0-picosecond (ps) pulse durations from a diode-pumped neodymium-doped lithium triborate (Nd:BEL) laser. This was accomplished using an acousto-optic mode locker and subsequent fiber-grating pulse compression.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Diode-pumped solid-state lasers are crucial for various applications.
- Achieving ultrashort pulse durations is a key challenge in laser technology.
- Neodymium-doped lithium triborate (Nd:BEL) is a promising gain medium.
Purpose of the Study:
- To generate and compress ultrashort laser pulses from a diode-pumped Nd:BEL laser.
- To investigate the effectiveness of acousto-optic mode locking and fiber-grating compression.
- To achieve picosecond pulse durations for potential applications.
Main Methods:
- Utilized a high-frequency acousto-optic mode locker for initial pulse generation.
- Employed a diode-pumped Nd:BEL laser system.
- Implemented a fiber-grating compressor for pulse duration reduction.
Main Results:
- Generated laser pulses with a full width at half maximum (FWHM) of 7.5 picoseconds (ps).
- Successfully compressed the pulses to a final duration of 1.0 ps FWHM.
- Demonstrated the efficacy of the combined mode-locking and compression technique.
Conclusions:
- The study successfully demonstrates the generation of 1.0-ps pulses from a diode-pumped Nd:BEL laser.
- Acquiring ultrashort pulses is feasible through acousto-optic mode locking and fiber-grating compression.
- This technique offers a pathway to high-performance ultrashort pulse lasers.
