Generation of 30 femtosecond, 900-970 nm pulses from a Ti:sapphire laser far off the gain peak.
A 58 MHz femtosecond Ti:sapphire oscillator is optimized for long wavelength operation beyond 900 nm. Sub 30 fs, approximately 3 nJ pulses with a bandwidth exceeding 20 THz are realized for central wavelengths 900 nm < or = lambda < or = 960 nm. This laser opens up new perspectives for the sensitive time-resolved spectroscopy of various semiconductor nanostructures. Moreover, its second harmonic serves as a source of visible multi-milliwatt femtosecond pulses tunable around 475 nm.
Physik-Department E11, Technische Universität München, James-Franck-Str., 85748 Garching, Germany.
Claudia
C
Ruppert
Markus
M
Betz
D000537:Aluminum Oxide / Q000737:chemistry*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014025:Titanium
D014025:Titanium; D000537:Aluminum Oxide