Ultrafast Equal Pulse Correlation Measurements in GaAs Structures with a Near-Field Microscope

Theoretical study of transient phenomena in near‐field optics

“…(1999) demonstrated near‐field optical photomask repair with a femtosecond laser. The transmission properties of the optical pulse through near‐field optical nano‐probe was experimentally studied by various methods: second harmonic generation (Smith et al ., 1994), absorption saturation (Smith et al ., 1995) and interferometric measurement (Dunn & Xie, 1995; Kawashima et al ., 1999).…”

“…At the same conference, near-field second harmonic imaging of piezoceramic was obtained with a 100 fs pulsed Ti: sapphire laser (Smolyaninov et al, 1999) and Lieberman et al (1999) demonstrated near-field optical photomask repair with a femtosecond laser. The transmission properties of the optical pulse through nearfield optical nano-probe was experimentally studied by various methods: second harmonic generation (Smith et al, 1994), absorption saturation (Smith et al, 1995) and interferometric measurement (Dunn & Xie, 1995;Kawashima et al, 1999).…”

Interferometric measurement of femtosecond optical pulses emitted from a fibre probe

“…For a local probe, such as a fibre probe, the transmission properties for optical pulses determine the basic performance of the pump–probe measurements, because they provide a temporal response inherent to the measurement system. Second harmonic generation (Smith et al ., 1994) and absorption saturation (Smith et al ., 1995) have been exploited to measure the temporal profile of an output of the probe in the near‐ and far‐fields. With these techniques, the signal to be measured needs to be somewhat intense in order to induce the optical nonlinearity.…”

“…One promising approach to time‐resolved imaging of ultrafast dynamics is to incorporate femtosecond optical pulses into a near‐field scanning optical microscope (Smith et al ., 1994, 1995; Stark et al ., 1995). For a local probe, such as a fibre probe, the transmission properties for optical pulses determine the basic performance of the pump–probe measurements, because they provide a temporal response inherent to the measurement system.…”