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Influencing supercontinuum generation by phase distorting an ultrashort laser pulse
Optics Letters
|February 14, 2015
Summary
Controlling laser pulse phase distortion with an acoustic-optic programmable dispersive filter alters supercontinuum generation in barium fluoride. This method allows tuning the spectral distribution, particularly the blue-shifted extent, of the generated light.
Area of Science:
- Nonlinear Optics
- Laser Physics
- Materials Science
Background:
- Supercontinuum generation is a key phenomenon in nonlinear optics.
- Barium fluoride is a material with unique optical properties.
- Controlling spectral properties of supercontinuum is crucial for various applications.
Purpose of the Study:
- To investigate the influence of phase distortion on supercontinuum generation.
- To demonstrate a method for controlling the spectral distribution of supercontinuum.
- To explore the role of second- and third-order phase distortions.
Main Methods:
- Generating supercontinuum in barium fluoride using femtosecond laser pulses.
- Utilizing an acoustic-optic programmable dispersive filter (AOPDF) to control phase distortions.
- Independently varying second- and third-order phase distortions.
Main Results:
- The spectral distribution of the supercontinuum is controllable by adjusting phase distortions.
- The blue-shifted spectral extent of the supercontinuum is particularly sensitive to phase distortion.
- AOPDF enables precise control over the spectral properties.
Conclusions:
- Phase distortion control is a viable method for tailoring supercontinuum spectra.
- This technique offers a way to tune the spectral output for specific applications.
- Barium fluoride is a suitable material for demonstrating controlled supercontinuum generation.
