Kerr-lens mode locking without dispersion compensation

Abstract

Summary form only given. We propose and theoretically investigate an alternative approach to Kerr-lens mode-locking (KLM), which avoids the group velocity dispersion (GVD) compensation by use of a negative net nonlinear refractive index per cavity round trip. For the compensation of the positive nonlinear refractive index of the laser crystal we propose to utilize a nonresonant bulk semiconductor inserted in the tightly focused resonator section.