Profile shaping of a Gaussian laser beam by an acoustic wave is well described using Collins integral and ABCD matrix formalism. It is shown by a numerical simulation that the relative width of the laser beam to the ultrasonic wavelength and the acoustic pressure inside the acoustooptic cell act...
Acoustooptic 2-D profile shaping of a Gaussian laser beam has been achieved by two plane ultrasonic waves progressing in orthogonal directions. The spot size W of the Gaussian laser beam must be considerable less than the wavelength lamb... Y Ohtsuka,Y Arima,Imal, Yoh - 《Applied Optics》 ...
Gaussian laser beam shaping: test and evaluation 来自 ResearchGate 喜欢 0 阅读量: 139 作者:SC Holswade,FM Dickey 摘要: A method for converting single mode Gaussian beams into beams with uniform irradiance profiles is described. This technique has application to laser cutting and welding, laser ...
Beam shaping optics transform input intensity distributions into some desired output distribution. Generally, it is the case that the input beam is easy or cheaper to generate, whereas the output is more complex. A common example is to take the Gaussian irradiance distribution produced by a ...
Laser Science, Tokyo are reviewed. Selection of LG modes from low to high orders using intra-cavity elements, polarization-selective mirrors, or shaping the pump beam profile, is considered. Illustrations of record-high-order LG hollow modes, multiring modes with highly directional propagation ...
Laguerre-Gaussian (LG) beams contain a helical phase front with a doughnut-like intensity profile. We use the LG beam to introduce a rather simple method for generation of a vector beam (VB), a beam with spatially-dependent polarization in the beam cross
phase of the output beam for each input spot in the array, for all modes over a wavelength range of 1510–1620 nm. As illustrated on the right of Fig.2a, digital holography simply measures the intensity of the interference between the mode being measured,S, and a tilted reference quasi...
In a second part, we illustrate how the temporal and spatial profile of the density-density correlation function of a fluid of light can be reconstructed with free-space optics. Also here the nontrivial (anti)bunching signal can be amplified significantly by shaping the light emitted by the ...
SPIE Conference on Laser Resonators and Beam ControlX. Zhu, A. Shulzgen, H. Li, J. V. Moloney, and N. Peyghambarian, ―Gaussian beam shaping based on multimode interference,‖ SPIE, 94, 201102 (2010).
We have set up a novel system for shaping the Gaussian laser beams into super-Gaussian beams. The digital micro-mirror device (DMD) is able to modulate the laser light spatially through binary-amplitude modulation mechanism. With DMD, the irradiance of the laser beam can be redistributed ...