M. Tech in Optoelectronics and Laser Technology
... Need for fiber optic Communication, evolution of light wave systems and its components. Optical Fiber – their classification, essentials of electromagnetic theory – total internal reflection, Good Hanchen shifts Dispersion in Single mode fiber, fiber losses, Non liner optical effects and polarizatio ...
... Need for fiber optic Communication, evolution of light wave systems and its components. Optical Fiber – their classification, essentials of electromagnetic theory – total internal reflection, Good Hanchen shifts Dispersion in Single mode fiber, fiber losses, Non liner optical effects and polarizatio ...
THE FRESNEL DIFFRACTION : A STORY OF LIGHT AND DARKNESS
... 2012, using material for students in Physics at the University of Nice Sophia Antipolis. The results are given in Fig.1. A laser and a beam expander are used to produce a coherent plane wave. We used as occulter a transparent slide with an opaque disk of diameter 1.5 mm, while Arago used a metallic ...
... 2012, using material for students in Physics at the University of Nice Sophia Antipolis. The results are given in Fig.1. A laser and a beam expander are used to produce a coherent plane wave. We used as occulter a transparent slide with an opaque disk of diameter 1.5 mm, while Arago used a metallic ...
The vibration galvanometer, and a test of the current
... In the Ruben's type the strongest magnet for its weight and one which will have the least air damping for its cross section is desired. This requires a compound magnet to be used lor greatest strength and the distribution of the parts will be governed by the shape of the field poles, it being desire ...
... In the Ruben's type the strongest magnet for its weight and one which will have the least air damping for its cross section is desired. This requires a compound magnet to be used lor greatest strength and the distribution of the parts will be governed by the shape of the field poles, it being desire ...
Ammonia Optical Sensing by Microring Resonators
... (FDTD) technique [22]. Waveguide modal behavior has been investigated and a single-mode condition has been satisfied (see profile of quasi-TM single mode in Figure 5). In absence of any change of cladding refractive index, optical propagation in the microring has been simulated as in Figure 6, and D ...
... (FDTD) technique [22]. Waveguide modal behavior has been investigated and a single-mode condition has been satisfied (see profile of quasi-TM single mode in Figure 5). In absence of any change of cladding refractive index, optical propagation in the microring has been simulated as in Figure 6, and D ...
Advanced optics tutorials
... to the small area of the beam. Care should be taken in cutting off the beam with a very small aperture. The source distribution would no longer be Gaussian, and the far-field intensity distribution would develop zeros and other non-Gaussian features. However, if the aperture is at least three or fou ...
... to the small area of the beam. Care should be taken in cutting off the beam with a very small aperture. The source distribution would no longer be Gaussian, and the far-field intensity distribution would develop zeros and other non-Gaussian features. However, if the aperture is at least three or fou ...
Frequency comb generation by CW laser injection
... such as optical time-domain multiplexing (OTDM) [16] or all-optical clock recovery [17]. With their wide optical spectrum and stabilized mode spacing, ultra-high repetition rate frequency combs are attractive for application in wavelength-division multiplexed (WDM) systems and also as multi-waveleng ...
... such as optical time-domain multiplexing (OTDM) [16] or all-optical clock recovery [17]. With their wide optical spectrum and stabilized mode spacing, ultra-high repetition rate frequency combs are attractive for application in wavelength-division multiplexed (WDM) systems and also as multi-waveleng ...
Physicists realize an atom laser, a source of coherent matter waves
... The active medium is a reservoir of atoms which are transferred to one state of the confining potential - the “lasing” mode. The reservoir can be atoms confined in other quantum states of the atom cavity or an ultraslow atomic beam. The atoms are transferred to the lasing mode either by collisions o ...
... The active medium is a reservoir of atoms which are transferred to one state of the confining potential - the “lasing” mode. The reservoir can be atoms confined in other quantum states of the atom cavity or an ultraslow atomic beam. The atoms are transferred to the lasing mode either by collisions o ...
Temporal mode selectivity by frequency conversion in second
... device for use in a transparent optical network using temporally orthogonal waveforms to encode different channels. We model the process using coupled-mode equations appropriate for wave mixing in a uniform secondorder nonlinear optical medium pumped by a strong laser pulse. We find Green functions ...
... device for use in a transparent optical network using temporally orthogonal waveforms to encode different channels. We model the process using coupled-mode equations appropriate for wave mixing in a uniform secondorder nonlinear optical medium pumped by a strong laser pulse. We find Green functions ...
Prospects for atom interferometry
... record a spot of bright light resulting from this constructive interference. If, however, the path length diŒerence is changed, the phase diŒerence between the superposing waves, U, will vary. The detector will then record the intensity of the light as varying between bright and dark, giving rise to ...
... record a spot of bright light resulting from this constructive interference. If, however, the path length diŒerence is changed, the phase diŒerence between the superposing waves, U, will vary. The detector will then record the intensity of the light as varying between bright and dark, giving rise to ...
Novel Metrology Techniques Resolve Strong-Field
... pulse in an electro-optic crystal. The nonlinear interaction results in a polarization rotation of the sampling pulse which is proportional to the instantaneous field strength of the test waveform. Scanning the temporal delay between test and sampling pulse, the electric field oscillations of the te ...
... pulse in an electro-optic crystal. The nonlinear interaction results in a polarization rotation of the sampling pulse which is proportional to the instantaneous field strength of the test waveform. Scanning the temporal delay between test and sampling pulse, the electric field oscillations of the te ...
Validation of input-noise model for simulations of
... the input noise. However, most numerical studies use the phenomenological one-photon-permode model for representing input noise (e.g. Refs. [5–7]), even though it does not provide a realistic input spectrum (as pointed out in Refs. [2, 8]), see Fig. 1. On the other hand, a highly realistic input CW ...
... the input noise. However, most numerical studies use the phenomenological one-photon-permode model for representing input noise (e.g. Refs. [5–7]), even though it does not provide a realistic input spectrum (as pointed out in Refs. [2, 8]), see Fig. 1. On the other hand, a highly realistic input CW ...
Department of Physics, Chemistry and Biology
... The attractive shiny metallic colour of some scarab beetles has made them the focus of several investigations. The colours originate from reflection of light on the cuticle [1] and understanding the structural colouration has motivated researches to closer investigate such structures. Back in the ea ...
... The attractive shiny metallic colour of some scarab beetles has made them the focus of several investigations. The colours originate from reflection of light on the cuticle [1] and understanding the structural colouration has motivated researches to closer investigate such structures. Back in the ea ...
Circular Dichroism (CD) and Optical Rotatory Dispersion (ORD
... Types of polarized light • Plane polarized light consists two circularly polarized components of equal intensity • Two circularly polarized components are like left- and right-handed springs/helices • As observed by looking at the source, right-handed circularly polarized light rotates clockwise • F ...
... Types of polarized light • Plane polarized light consists two circularly polarized components of equal intensity • Two circularly polarized components are like left- and right-handed springs/helices • As observed by looking at the source, right-handed circularly polarized light rotates clockwise • F ...
