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Pulse picking by phase-coherent additive pulse generation in an external cavity
Y Vidne1, M Rosenbluh, T W Hansch
1Resnick Institute for Advanced Technology and Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel.
Optics Letters
|December 19, 2003
Summary
We developed a simple technique to amplify phase-coherent light pulses using a ring cavity resonator. This method increases pulse energy and controls repetition frequency for advanced laser applications.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Mode-locked lasers produce trains of equidistant, phase-coherent light pulses.
- High-energy pulsed lasers are crucial for various scientific and technological applications.
Purpose of the Study:
- To develop a simple method for generating amplified phase-coherent light pulses.
- To increase the pulse energy of light pulses while controlling their repetition frequency.
Main Methods:
- Coupling a pulse train from a mode-locked Ti:sapphire laser into a matched ring cavity resonator.
- Utilizing coherent superposition and addition of pulses within the cavity.
- Employing a fast acousto-optic modulator for pulse switching.
Main Results:
- Successfully generated amplified phase-coherent light pulses.
- Achieved higher pulse energies compared to the original mode-locked pulses.
- Enabled a reduced and controlled repetition frequency of the output pulse train.
Conclusions:
- The implemented method provides an effective way to enhance laser pulse energy.
- This technique offers control over pulse repetition frequency, broadening its applicability.
- The simple setup is suitable for generating intense, phase-coherent light pulses.