Light beams with fractional orbital angular
... p indices for each LG mode of the superposition. A similar technique has been used earlier to achieve a self-imaging effect [17], where by using superpositions of only odd values of m or only even values of m, the same Gouy phase could be obtained for all the constituent modes. We make use of this i ...
... p indices for each LG mode of the superposition. A similar technique has been used earlier to achieve a self-imaging effect [17], where by using superpositions of only odd values of m or only even values of m, the same Gouy phase could be obtained for all the constituent modes. We make use of this i ...
Composite optical vortices - RIT Center for Imaging Science
... beams,2 light scattered from rough surfaces,3,4 optical caustics,5,6 and OV solitons.7,8 The center of the vortex is characterized by a dark core, within which the intensity vanishes at a point, assuming the beam is coherent.9,10 The phase front of an OV is helical, and thus the wave vectors have az ...
... beams,2 light scattered from rough surfaces,3,4 optical caustics,5,6 and OV solitons.7,8 The center of the vortex is characterized by a dark core, within which the intensity vanishes at a point, assuming the beam is coherent.9,10 The phase front of an OV is helical, and thus the wave vectors have az ...
Generation of Repumping Light for Ultracold Strontium Experiments
... My sincerest appreciation to the Steck Group at the University of Oregon, not only for developing such a successful ECDL design, but also for both making it available for others to utilize, and being open to communication during my construction process. A strength of the Physics Department at UCSB i ...
... My sincerest appreciation to the Steck Group at the University of Oregon, not only for developing such a successful ECDL design, but also for both making it available for others to utilize, and being open to communication during my construction process. A strength of the Physics Department at UCSB i ...
Multimode Pumping of Optical Parametric Oscillators
... ) ,normalized temporal envelope of the pump pulse, diffraction limited (the divergence measured was 1.1 0.05 and WO the spot size of the fundamental mode ( n = 0). The x D.L.). The same beam quality was obtained using a regular constant f o is the factor by which the peak of the fundamental flat out ...
... ) ,normalized temporal envelope of the pump pulse, diffraction limited (the divergence measured was 1.1 0.05 and WO the spot size of the fundamental mode ( n = 0). The x D.L.). The same beam quality was obtained using a regular constant f o is the factor by which the peak of the fundamental flat out ...
Optical Fourier techniques for medical image processing and phase
... and M states and can be viewed as a two level system as shown in Fig. 5b. The bR can be switched between B ¡ M states at relatively low powers of milliwatts. The bR film is initially isotropic as the molecules are randomly oriented. As it is placed between a crossed polarizer (V) and analyzer (H) arr ...
... and M states and can be viewed as a two level system as shown in Fig. 5b. The bR can be switched between B ¡ M states at relatively low powers of milliwatts. The bR film is initially isotropic as the molecules are randomly oriented. As it is placed between a crossed polarizer (V) and analyzer (H) arr ...
Simple 3-D characterization of ultrashort laser pulses
... chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important parameters for a laser pulse are the spatial distribution of the laser fluence (energy per unit area), the pulse duration and the chirp (the frequency change across the pulse). Although ...
... chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important parameters for a laser pulse are the spatial distribution of the laser fluence (energy per unit area), the pulse duration and the chirp (the frequency change across the pulse). Although ...
Other photon-lithographies
... • Since both phase and intensity of light reflected by each pixel can be controlled, SLM can easily realize most RETs (resolution enhancement technology) such as phase-shifting, optical proximity correction (OPC), sub-resolution assist features (SRAF), and chromeless phase lithography (CPL). • When ...
... • Since both phase and intensity of light reflected by each pixel can be controlled, SLM can easily realize most RETs (resolution enhancement technology) such as phase-shifting, optical proximity correction (OPC), sub-resolution assist features (SRAF), and chromeless phase lithography (CPL). • When ...
Laser beam profiler
A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers — ultraviolet, visible, infrared, continuous wave, pulsed, high-power, low-power — there is an assortment of instrumentation for measuring laser beam profiles. No single laser beam profiler can handle every power level, pulse duration, repetition rate, wavelength, and beam size.