Simple synchronization technique of a mode-locked laser for Laser-Compton scattering γ-ray source

Area of Science:

• Physics
• Engineering
• Laser Technology

Background:

• Mode-locked lasers are crucial for generating high-energy photons.
• Precise synchronization is essential for advanced applications like Laser-Compton scattering.
• Existing synchronization methods can be complex or costly.

Purpose of the Study:

• To present a simple and effective synchronization technique.
• To synchronize a reference electrical oscillator with a mode-locked laser.
• To enhance a narrowband picosecond Laser-Compton scattering gamma-ray source.

Main Methods:

• Utilized a commercial 1-chip frequency synthesizer.
• Implemented a synchronization technique between an electrical oscillator and a mode-locked laser.
• Characterized timing jitter and frequency stability.

Main Results:

• Achieved time synchronization with 180 fs RMS jitter (10 Hz-100 kHz bandwidth).
• Demonstrated excellent frequency stability of 640 μHz at an 80 MHz repetition rate.
• Confirmed the validity and performance of the synchronization technique over 10 hours.

Conclusions:

• The proposed technique offers a simple and effective solution for laser synchronization.
• This method is suitable for narrowband picosecond Laser-Compton scattering gamma-ray sources.
• The use of commercial components ensures practicality and potential for widespread adoption.