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Updated: Jan 21, 2026
14:18
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
11.9K
Kerr-lens mode-locked Pr3+:LuLiF4 laser.
Optics Letters
|August 2, 2019
Summary
Researchers developed a novel blue laser diode-pumped Pr3+:LuLiF4 (Pr:LLF) laser. This continuous-wave mode-locked laser achieves a record short pulse width of 1.1 ps at 604 nm.
Area of Science:
- Laser Physics
- Solid-State Lasers
- Quantum Optics
Background:
- Pr3+-doped crystals are promising for visible lasers.
- Blue laser diode (LD) pumping offers efficiency and compactness.
- Achieving ultrashort pulses in LD-pumped visible lasers remains challenging.
Purpose of the Study:
- To demonstrate a Kerr-lens mode-locked Pr3+:LuLiF4 (Pr:LLF) laser.
- To achieve continuous-wave (CW) mode-locking at 604 nm.
- To obtain the shortest pulse width for LD-pumped Pr3+ ion lasers.
Main Methods:
- Utilizing Kerr-lens mode-locking (KLM) technique.
- Employing theoretical group velocity dispersion (GVD) calculation.
- Implementing GVD compensation within the laser cavity.
- Pumping the Pr:LLF crystal with a blue laser diode.
Main Results:
- Successfully realized a CW mode-locked Pr:LLF laser.
- Operated the laser at a wavelength of 604 nm.
- Achieved a pulse width of 1.1 picoseconds (ps).
- This represents the shortest pulse width for LD-pumped Pr3+ ion lasers to date.
Conclusions:
- The developed Pr:LLF laser demonstrates efficient CW mode-locking with blue LD pumping.
- The achieved 1.1 ps pulse width is a significant advancement for visible lasers.
- This work provides inspiration for developing blue LD-pumped visible mode-locked lasers.
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