supported by the National Basic Research Program of China (2006CB806000);the National Science and Technology Supporting Program of China (2006BAF03A20);the National Hi-Tech Research and Development Program of China (2008AA031901);the National Natural Science Foundation of China (10974006);Grant-in-Add from Science & Technology Commission Haidian District,Beijing,China (K2008096)
We report a semiconductor saturable absorber mirror (SESAM) with phase shift compensation.The SESAM shows a uniform low-intensity reflectivity and a modulation depth up to 12% for the wavelength from 1000 to 1100 nm.A...