Wavefront-correction for nearly diffraction limited focusing of dual-color laser beams to high intensities

Authors

Baozhen Zhao, University of Nebraska-LincolnFollow
Jun Zhang, University of Nebraska-Lincoln
Shouyuan Chen, University of Nebraska-LincolnFollow
Cheng Liu, University of Nebraska-LincolnFollow
Grigory V. Golovin, University of Nebraska-LincolnFollow
Sudeep Banerjee, University of Nebraska-LincolnFollow
Kevin J. Brown, University of Nebraska-LincolnFollow
Jared Mills, University of Nebraska-Lincoln
Chad Petersen, University of Nebraska-LincolnFollow
Donald Umstadter, University of Nebraska-LincolnFollow

Date of this Version

2014

Citation

Optics Express 22, 2014

Comments

Copyright 2014 Used by permission

Abstract

We demonstrate wavefront correction of terawatt-peak-power laser beams at two distinct and well-separated wavelengths. Simultaneous near diffraction-limited focusability is achieved for both the fundamental (800 nm) and second harmonic (400 nm) of Ti:sapphire-amplified laser light. By comparing the relative effectiveness of various correction loops, the optimal ones are found. Simultaneous correction of both beams of different color relies on the linear proportionality between their wavefront aberrations. This method can enable two-color experiments at relativistic intensities.