Femtosecond Laser Pulse Compression by an Organic Crystalline Fiber

Abstract

Compression of femtosecond optical pulses using a single-mode fused silica fiber (glass fiber) always needs high amplification of laser output pulses because of a low nonlinear refractive index n2 G of its fiber.1) This leads to some problems concerning the pulse stability in time and space, the pulse repetition rate, the optical damages to the glass fiber, and the precise adjustment of a big amplifier system. In order to solve these problems we inverstigated femtosecond-response, highly third-order nonlinear organic crystalline fibers.