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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Isochronic carrier-envelope phase-shift compensator.

Mihaly Görbe¹, Karoly Osvay, Christian Grebing

¹Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary.

|November 19, 2008

Summary

This summary is machine-generated.

This study introduces a novel compensator assembly for precise control of laser cavity phase and group delay. The device offers significant improvements in carrier-envelope phase control for advanced optics experiments.

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Area of Science:

Optics and Photonics
Laser Physics
Nonlinear Optics

Background:

Precise control over phase and group delay is crucial for advanced laser applications.
Existing methods for controlling carrier-envelope phase shift can be complex and introduce unwanted timing variations.

Purpose of the Study:

To present a novel compensator assembly for orthogonal control of phase and group delay within a laser cavity.
To demonstrate a simplified approach to carrier-envelope phase control with minimal impact on laser repetition rate.

Main Methods:

A compensator assembly comprising two thin wedge prisms made from selected optical materials was designed.
The assembly allows independent adjustment of phase delay and cavity round-trip time through distinct shifting mechanisms.
Theoretical analysis and experimental verification were employed to validate the concept.

Main Results:

The proposed scheme achieves orthogonal control of phase and group delay.
A factor of 30 reduction in the influence on the repetition rate was observed compared to standard silica wedge pairs.
Single-pass timing differences were reduced to the femtosecond regime for a 2pi carrier-envelope phase shift adjustment.

Conclusions:

The developed compensator device significantly simplifies carrier-envelope phase control.
This method minimizes distortions in timing and dispersion, benefiting experiments in extreme nonlinear optics.