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

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Closed-loop carrier-envelope phase stabilization with an acousto-optic programmable dispersive filter.

N Forget¹, L Canova, X Chen

¹FASTLITE, Centre Scientifique d'Orsay, Bâtiment 503, Plateau du Moulon, 91401 Orsay, France. forget@fastlite.com

|December 3, 2009

Summary

This summary is machine-generated.

We achieved precise control over femtosecond laser pulses using an acousto-optic programmable dispersive filter (AOPDF). This technology enables stable laser performance by correcting phase drifts in real-time.

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Area of Science:

Ultrafast Optics
Laser Physics
Nonlinear Optics

Background:

Carrier-envelope (CE) phase control is critical for precise femtosecond laser applications.
Existing methods for CE phase stabilization can be complex and limited in bandwidth.
Acousto-optic programmable dispersive filters (AOPDFs) offer a versatile platform for laser pulse manipulation.

Purpose of the Study:

To demonstrate arbitrary carrier-envelope (CE) phase control of femtosecond laser pulses using an AOPDF.
To achieve closed-loop CE phase stabilization at a 15 Hz repetition rate.
To investigate the effectiveness of AOPDFs in correcting slow CE phase drifts within a chirped pulse amplifier.

Main Methods:

Utilizing an acousto-optic programmable dispersive filter (AOPDF) for femtosecond laser pulse shaping.
Implementing a feedback loop for closed-loop CE phase stabilization.
Integrating the AOPDF within a 1 kHz chirped pulse amplifier system.

Main Results:

Arbitrary CE phase control with accuracy better than pi/100 at 1 kHz repetition rate was achieved.
Demonstrated 15 Hz closed-loop CE phase stabilization for the first time.
Successfully corrected slow CE phase drifts using the AOPDF.

Conclusions:

AOPDFs provide a powerful and accurate method for arbitrary CE phase control of femtosecond laser pulses.
Closed-loop CE phase stabilization at 15 Hz is feasible with AOPDFs, enhancing laser stability.
This technique offers a promising solution for applications requiring precise control over laser pulse properties.