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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Controlled waveforms on the single-cycle scale from a femtosecond oscillator
Stefan Rausch1, Thomas Binhammer, Anne Harth
1Institute of Quantum Optics, Leibniz University Hannover, Welfengarten 1, D-30167 Hannover, Germany. rausch@iqo.uni-hannover.de
Optics Express
|June 26, 2008
Summary
We developed an octave-spanning Ti:sapphire laser producing ultrashort pulses down to 3.7 fs. This system achieves direct carrier-envelope offset (CEO)-phase stabilization for precise electric field control.
Area of Science:
- Ultrafast lasers
- Nonlinear optics
- Attosecond science
Background:
- Femtosecond lasers are crucial for studying ultrafast phenomena.
- Precise control over the carrier-envelope offset (CEO) phase is essential for generating attosecond pulses and controlling electric fields.
- Existing systems often require additional spectral broadening for CEO stabilization.
Purpose of the Study:
- To develop a Ti:sapphire laser oscillator with octave-spanning bandwidth.
- To achieve direct, self-stabilization of the CEO frequency without external spectral broadening.
- To enable precise control over the electric field of ultrashort pulses.
Main Methods:
- Utilized a Ti:sapphire oscillator designed for octave-spanning bandwidth.
- Implemented an f-2f interferometer for direct CEO-phase stabilization.
- Characterized pulse duration and spectral properties.
Main Results:
- Demonstrated an octave-spanning Ti:sapphire oscillator.
- Achieved Fourier-limited pulses as short as 3.7 fs.
- Successfully realized direct CEO-phase stabilization, yielding 4.4 fs pulses with 90 mW average power.
Conclusions:
- The developed laser system provides direct CEO-phase stabilization for ultrashort pulses.
- This enables full control of the electric pulse field on a sub-femtosecond timescale.
- The system is a valuable tool for ultrafast science and attosecond physics.
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