TEM00 terawatt amplification by use of micro-optic spatial mode conversion.
Micro-optic technology is used in a terawatt multipass Ti:sapphire amplifier to convert high-multimode, 532-nm radiation from an unstable resonator Nd:YAG laser into a TEM00 amplified output without sacrificing the amplifier-to-pump energy conversion efficiency. Experimental measurements and Fourier analysis of the spatial mode show a 3.8-fold increase in the peak irradiance and an order-of-magnitude improvement in the spatial contrast.
DiChiara
Anthony
A
Department of Physics and Astronomy, University of Delaware, 223 Sharp Laboratory, Newark, Delaware 19716, USA.
Chowdhury
Enam A
EA
Ongadi
George
G
Walker
Barry C
BC
Tamosaitis
Robert S
RS