The interaction of a laser-produced electron beam with an ultraintense laser pulse in free space is studied. We show that the optical pulse with a(0)=0.5 imparts momentum to the electron beam, causing it to deflect along the laser propagation direction. The observed 3-degree angular deflection is found to be independent of polarization and in good agreement with a theoretical model for the inte...

In the standard nanosecond laser photolysis method for kinetic studies, a Q-switched laser generates transient species, and absorption spectrophotometry provides a measure of their concentrations. The sample is placed between the monitoring source (a pulsed xenon arc or a flash lamp) and a monochromator, and a photomultiplier tube (PMT) is used for measuring the intensity of the light leaving t...

We used the high-precision laser interferometer technique of power recycling to characterize the optical loss of an all-reflective grating beam splitter. This beam splitter was used to set up a Michelson interferometer with a power-recycling resonator with a finesse of 883. Analyzing the results obtained, we determined the beam splitter's total optical loss to be (0.193+/-0.019)%. Low loss all-...

Progress in accelerator physics and laser physics has enabled us to generate a new generation of laser Compton scattering (LCS) γ-ray beam. The LCS γ-ray beam has been used for the study of fundamental science and industrial applications. We present examples of some applications using the LCS γ-ray beam and possibility using the next generation of high-intense LCS γ-ray beam provided from the E...

Laser micromachining has the capability to fabricate very small and basic 2.5 D geometric features on a range of materials in the form of laser ablation or irradiation. Short pulsed lasers that can achieve wide range of wavelengths in the form of harmonics of infrared laser beam at 1064 nm wavelength have been a very effective micro-machining tool used for hole drilling, cutting, scribing, trim...

In this paper we present a 3D laser pulse shaping scheme that can be applied for generating ellipsoidal electron bunches from a photoinjector. The 3D shaping is realized through laser phase tailoring in combination with chromatic aberration in a focusing optics. Performance of an electron beam generated from such shaped laser pulses is compared with that of a uniforma ellipsoidal, a uniform cyl...

LLE Review, Volume 96 225 Laser-beam shaping is a rapidly developing field of research driven by both technological improvements of beam-shaping devices and the ever-increasing demands of applications. In high-energy laser chains, efficient beam shaping is successfully achieved in the front ends by passive methods such as beam apodization1 or intracavity mode shaping;2 however, these static tec...

A comparison of the beam propagation method (BPM) in two transverse dimensions and for a cylindrically symmetric laser beam with a direct FFT based method is presented for self-focusing of laser beam in a plasma with saturating type (ponderomotive) nonlinearity and cubic nonlinearity. PACS: 52.38.Hb; 42.65.Tg; 42.65.Wi; 05.45.Yv

Laser projection, such as that used in laser light shows, usually uses computer-drawn graphics. However, some restrictions are imposed by laser-scanned displays on these vector-based drawings. This paper presents a general vector-oriented drawing method to display computer vector graphics on different laser-scanned displays with optimization. The method considers how to solve the three fundamen...