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Electro-optically cavity-dumped ultrashort-pulse Ti:sapphire oscillator
Optics Letters
|October 31, 2009
Summary
This study demonstrates the first electro-optic cavity-dumped short-pulse titanium-sapphire oscillator. It achieves high single-pulse energies and short durations, ideal for advanced laser applications.
Area of Science:
- Laser Physics
- Optics and Photonics
- Ultrafast Science
Background:
- Titanium-sapphire (Ti:sapphire) lasers are crucial for generating ultrashort laser pulses.
- Cavity dumping offers a method to extract high-energy pulses from mode-locked oscillators.
- Existing methods face limitations in pulse energy and extraction efficiency.
Purpose of the Study:
- To demonstrate the first electro-optically cavity-dumped short-pulse Ti:sapphire oscillator.
- To achieve high single-pulse energy directly from the oscillator.
- To enable advanced applications requiring high-contrast, ultrashort pulses.
Main Methods:
- Development of a novel ultrabroadband polarizer with zero dispersion and zero insertion loss.
- Implementation of an electro-optic cavity dumping technique in a Ti:sapphire oscillator.
- Characterization of pulse energy, duration, peak power, and contrast.
Main Results:
- Successful demonstration of an electro-optically cavity-dumped short-pulse Ti:sapphire oscillator.
- Achieved single-pulse energies exceeding 200 nJ at a 1 kHz repetition rate.
- Obtained pulse durations under 20 fs with peak power over 10 MW and high contrast (>2000).
Conclusions:
- The developed Ti:sapphire oscillator represents a significant advancement in ultrafast laser technology.
- The system's high pulse energy and short duration make it suitable for white-light continuum generation.
- It serves as an excellent seed source for multipass or regenerative amplifiers.
