Picosecond time-resolved near-IR spectra of C60 excited states by pump-probe measurements using a probe beam based on broad-band optical parametric generation

1996 ◽  
pp. 117 ◽  
Author(s):  
Akira Watanabe ◽  
Osamu Ito ◽  
Motoyuki Watanabe ◽  
Haruhisa Saito ◽  
Musubu Koishi
Keyword(s):  
Excited States ◽  
Probe Beam ◽  
Broad Band ◽  
Time Resolved ◽  
Pump Probe ◽  
Parametric Generation ◽  
Near Ir ◽  
Optical Parametric ◽  
Optical Parametric Generation ◽  
Probe Measurements

Pump-Probe Measurements Using Silicon Nanocrystal Waveguides

2003 ◽  
Vol 770 ◽  
Author(s):  
Nathanael Smith ◽  
Max J. Lederer ◽  
Marek Samoc ◽  
Barry Luther-Davies ◽  
Robert G. Elliman
Keyword(s):  
Probe Beam ◽  
Time Resolution ◽  
Pump Beam ◽  
Silicon Nanocrystals ◽  
Continuous Wave ◽  
Optical Gain ◽  
Optical Pump ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Measurements

AbstractOptical pump-probe measurements were performed on planar slab waveguides containing silicon nanocrystals in an attempt to measure optical gain from photo-excited silicon nanocrystals. Two experiments were performed, one with a continuous-wave probe beam and a pulsed pump beam, giving a time resolution of approximately 25 ns, and the other with a pulsed pump and probe beam, giving a time resolution of approximately 10 ps. In both cases the intensity of the probe beam was found to be attenuated by the pump beam, with the attenuation increasing monotonically with increasing pump power. Time-resolved measurements using the first experimental arrangement showed that the probe signal recovered its initial intensity on a time scale of 45-70 μs, a value comparable to the exciton lifetime in Si nanocrystals. These data are shown to be consistent with an induced absorption process such as confined carrier absorption. No evidence for optical gain was observed.

Excited States of C70and the Intersystem Crossing Process Studied by Picosecond Time-Resolved Spectroscopy in the Visible and Near-IR Region

1996 ◽  
Vol 100 (25) ◽  
pp. 10518-10522 ◽  
Author(s):  
Akira Watanabe ◽  
Osamu Ito ◽  
Motoyuki Watanabe ◽  
Haruhisa Saito ◽  
Musubu Koishi
Keyword(s):  
Excited States ◽  
Intersystem Crossing ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Near Ir

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

2007 ◽  
Author(s):  
Valentin Petrov ◽  
Masood Ghotbi ◽  
Pancho Tzankov ◽  
Frank Noack ◽  
Ivailo Nikolov ◽  
...  
Keyword(s):  
Spectral Range ◽  
High Energy ◽  
Femtosecond Pulses ◽  
Parametric Generation ◽  
Optical Parametric ◽  
Optical Parametric Generation
Sign in / Sign up

Export Citation Format

Share Document