Optics
Optics
U. Keller, G.W. tHooft, W.H. Knox, J.E. Cunningham, "Femtosecond pulses from a continuously self-starting passively mode-locked Ti:sapphire laser," Optics Letters, 16:1022-24, 1991. Ursula Keller (AT&T Bell Laboratories, Holmdel, N.J.): "Until the late 1980s, advances in ultrashort pulse generation were dominated by dye lasers. These ultrafast laser systems with pulse duration shorter than 100 femtoseconds are relatively large, are maintenance-intensive, and require a laboratory environment wi