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Multimillijoule chirped parametric amplification of few-cycle pulses
N Ishii1, L Turi, V S Yakovlev
1Institut für Photonik, Technische Universität Wien, Gusshausstrasse 27/387, A-1040 Vienna, Austria. nobuhisa.ishii@mpq.mpg.de
Optics Letters
|March 26, 2005
Summary
Optical parametric chirped-pulse amplification achieves 8 mJ pulse energy and over 100 THz bandwidth. This method enables ultrashort 10-fs pulse durations for advanced laser applications.
Area of Science:
- Laser physics
- Nonlinear optics
- Ultrafast science
Background:
- Achieving high-energy, ultrashort laser pulses is crucial for various scientific applications.
- Traditional amplification methods face limitations in energy scaling and pulse duration.
Purpose of the Study:
- To demonstrate optical parametric chirped-pulse amplification (OPCPA) for generating high-energy, ultrabroadband laser pulses.
- To achieve pulse compression down to femtosecond durations.
Main Methods:
- Utilized a multistage noncollinear type I phase-matched beta-barium borate parametric amplifier.
- Employed stretched broadband seed pulses from a Ti:sapphire oscillator.
- Synchronized an independent picosecond laser for precise repetition rate control.
- Implemented a down-chirped pulse stretcher and a positive-dispersion chirped mirror compressor.
Main Results:
- Generated laser pulses with energies up to 8 mJ.
- Achieved a spectral bandwidth exceeding 100 THz.
- Demonstrated partial pulse compression to a duration of 10 femtoseconds.
Conclusions:
- OPCPA is an effective technique for producing high-energy, ultrashort laser pulses.
- The demonstrated system offers a promising platform for applications requiring extreme light conditions.