Abstract

Through the use of anamorphic focusing, we present a method for generating broadband noncollinear optical parametric amplification in signal regions lacking a broadband phase-matching condition that is ideally suited for narrowband pump sources, herein based on an erbium-doped fiber oscillator. With a short focal length cylindrical lens to enhance the phase-matching condition and a long focal length cylindrical lens in the orthogonal plane to limit the pump power in the amplifying beta barium borate crystal, we amplify pulses in the blue–green spectral region with over 100THz (3500cm1) bandwidth. The amplified signal is subsequently compressed to 9.5fs, near the transform limit.

© 2011 Optical Society of America

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