Control of laser radiation parameter

On the interference of femtosecond laser pulses during noncollinear acousto-optic interaction

K. B. Yushkov, A. I. Chizhikov, V. Ya. Molchanov

University of Science and Technology MISIS, 119049, Moscow, Russia

Abstract: A method for coherent combining of two femtosecond laser beams based on acousto-optic interaction is proposed. Experimental studies demonstrated a stationary interference pattern of two beams at the output of the acousto-optic cell if the ultrasound frequency equals the mode spacing of the femtosecond radiation spectrum. Control of intensity distribution between two output beams is performed by amplitude and phase of the electrical signal applied to the acousto-optic cell.

Keywords: acousto-optics, interference, coherent combining, femtosecond laser pulse.

Received: 25.07.2023
Revised: 15.11.2023

 English version: Quantum Electronics, 2023, 50:suppl. 11, S1191–S1199