Subnanosecond pulse generation of 193 nm radiation by pulse slicing

Jaroszynski, D. A.; King, Tekoa L.

doi:10.1088/0022-3735/16/9/011

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…There are numbers of techniques for the shaping of nanosecond or femtosecond pulses. The formation of flat-top temporal profile pulses on a nanosecond scale are mostly based on the application of fast optoelectronics [7,9,10] while the temporal shape of the femtosecond or sub-picosecond pulse can be modified by amplitude and phase modulation of the pulse spectral components employing the spatial light modulator [11][12][13][14] or acousto-optic programmable dispersive filter [15][16][17]. For the pulses of 30-100 ps duration the application of these methods is rather limited due to a narrow pulse spectrum (fractions of nanometer) and insufficient temporal resolution of optoelectronic schemes.…”

Section: Introductionmentioning

confidence: 99%

Formation of flat-top picosecond pump pulses for OPCPA systems by cascade second harmonic generation

Adamonis¹,

Antipenkov²,

Kolenda³

et al. 2012

Lith. J. Phys.

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We report on the method for picosecond pulse envelope shaping that is based on pulse temporal profile transformations during the cascade second harmonic generation. It was demonstrated theoretically and experimentally that under a particular second harmonic generation condition, e. g. pump pulse intensity and crystal length, the 1064 nm pump pulses with a temporal profile close to the Gaussian one and pulse width of 75 ps at FWHM can be converted to pulses of fundamental and second harmonics with the super-Gaussian temporal profile having an intensity plateau region extending over a ~100 ps time interval when conversion efficiency in the first stage of the harmonic generator was around 45-50%. Our proposed shaping method is particularly suitable for the application in the multistage OPCPA pumped by the second harmonic of Nd:YAG laser radiation.

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