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1-GHz repetition-rate frequency-modulation mode-locked neodymium lasers at 1.3 microm
Optics Letters
|September 25, 2009
Summary
High-repetition-rate frequency-modulation mode locking was achieved for neodymium lasers at 1.3-microm wavelength. This study demonstrates efficient pulse generation with diode-laser-pumped solid-state lasers.
Area of Science:
- Laser physics
- Solid-state optics
- Photonics
Background:
- Mode locking is crucial for generating ultrashort laser pulses.
- Frequency-modulation (FM) mode locking offers advantages in pulse stability and repetition rate.
- Neodymium (Nd) lasers are widely used in various applications due to their robust performance.
Purpose of the Study:
- To investigate high-repetition-rate frequency-modulation mode locking in all-solid-state neodymium lasers.
- To achieve efficient ultrashort pulse generation at a 1.3-microm wavelength.
- To characterize the performance of diode-laser-pumped Nd:YAG and Nd:YLF lasers under FM mode locking.
Main Methods:
- Utilized frequency-modulation (FM) mode locking technique.
- Employed all-solid-state diode-laser-pumped neodymium lasers (Nd:YAG and Nd:YLF).
- Operated lasers at a 1.3-microm wavelength with a high repetition rate of 1 GHz.
Main Results:
- Achieved high-repetition-rate (1 GHz) FM mode locking in Nd:YAG and Nd:YLF lasers.
- Obtained ultrashort pulses with durations of 12 ps (Nd:YAG) and 8 ps (Nd:YLF).
- Generated average output powers of 162 mW (Nd:YAG) and 240 mW (Nd:YLF).
Conclusions:
- Demonstrated the feasibility of high-repetition-rate FM mode locking for neodymium lasers at 1.3-microm.
- Highlighted the effectiveness of diode-laser pumping for efficient solid-state laser operation.
- Provided insights into the driven relaxation oscillations in FM mode-locked continuous-wave (cw) lasers.
