Picosecond Laser Pulse Measurement

Tpl when excited by a broad bandwidth laser pulse that is tuned to the aunrs localized surface plasmon resonance.

Picosecond laser pulse measurement.

Pulse width measurement in the sub picosecond to picosecond range. The width of the cross correlation curve is about 75 ps when the length of cs 2 medium is 1 cm which is the same as the result of no cs 2 fig. Measure picosecond dura tions accurately in essence. The microwave reflectivity of the ge is measured as a.

Picosecond microwave pulse measurement. Sapphire regenerative amplifier spectra physics spitfire ace 35f is used to generate the picosecond or femtosecond laser pulses with the central wavelength of 800 nm and repetition rate of 1 khz. Despite the high velocity of light ultrashort pulses can also be very short in the spatial domain. As the first stage of pulse width measurement however we examined a pulse width measurement technique in the picosecond range by using.

A pump probe technique that uses a femtosecond laser and ultra short gamma ray pulses is the most potential candidate. And huang chunning and takeda yasuhiro and liu yun abstractnote a compact optical correlator system that measures both the autocorrelation between two infrared ir lights and the cross. Edinburgh instruments epl series of diode lasers have pulse widths down to 55 ps and are ideal for most scenarios. The nature of the.

Article osti 1185500 title multifunctional optical correlator for picosecond ultraviolet laser pulse measurement author rakhman abdurahim and wang yang and garcia frances and long cary d. The special symmetry properties of second harmonic generation at the surface of a gaas crystal are used in a technique which measures the shape of the fast pulses from a mode locked nd glass laser. The schematic diagram of the experimental setup for the spatiotemporal intensity measurement of the picosecond laser pulses by using the cup system is shown in fig. Picosecond pulsed diode lasers are the most common light source for tcspc measurements.

The technique is capable of measuring pulse widths at least as short as 4 10 13 sec. The pulses studied were found to have a full width at half power of between 4 and 6 picoseconds. A 1 ns pulse still has a length of 30 cm in air the shortest pulses which can be generated directly with a laser with a duration of roughly 5 fs have. The microwave burst generated by a gaas switch activated by a 30 ps 1 06 lm optical pulse coming from nd y ag mode locked laser is gated by laser induced reflec tivity in a ge wafer.

The temporal evolutions of the picosecond pulse are measured when the picosecond laser pulse propagates in cs 2 nonlinear medium with different lengths which are presented in fig.