92, 075445 (2015)
... interactions alone. It was demonstrated [41] that the dipoledipole calculations with the retarded fields result in the same exciton polaritons as arising from the more familiar treatment [31,37] of the interaction of Coulomb excitons with transverse photons [see a schematic picture in Fig. 1(c)]. Si ...
... interactions alone. It was demonstrated [41] that the dipoledipole calculations with the retarded fields result in the same exciton polaritons as arising from the more familiar treatment [31,37] of the interaction of Coulomb excitons with transverse photons [see a schematic picture in Fig. 1(c)]. Si ...
A Quantum Gas Microscope for Fermionic Atoms
... ions in a crystal, the optical lattice potential depth can be tuned by changing the light intensity of the laser beam. With this tool, researchers were able to experimentally observe the quantum phase transition from the superfluid to the Mott-insulating phase [14]. After successfully exploring the b ...
... ions in a crystal, the optical lattice potential depth can be tuned by changing the light intensity of the laser beam. With this tool, researchers were able to experimentally observe the quantum phase transition from the superfluid to the Mott-insulating phase [14]. After successfully exploring the b ...
Fiber Optics
... measure the beat length by observing the scattered light pattern coming out of the fiber. To perform this task in a rigorous way, you must first find the orientation of the fiber axes. You may use the same focusing optics as in the previous experiments. Add a quarter-wave plate and a polarizer as sh ...
... measure the beat length by observing the scattered light pattern coming out of the fiber. To perform this task in a rigorous way, you must first find the orientation of the fiber axes. You may use the same focusing optics as in the previous experiments. Add a quarter-wave plate and a polarizer as sh ...
Optical Components and Devices for Next-Generation
... Forty-Gb/s optical modulators require an electrical-to-optical (E/O) bandwidth of over 30 GHz. However, there is a tradeoff between the E/O bandwidth and drive voltage, both of which depend on the parameters of the CPW electrodes. Conventionally, CPW electrodes with a narrow gap and short interactio ...
... Forty-Gb/s optical modulators require an electrical-to-optical (E/O) bandwidth of over 30 GHz. However, there is a tradeoff between the E/O bandwidth and drive voltage, both of which depend on the parameters of the CPW electrodes. Conventionally, CPW electrodes with a narrow gap and short interactio ...
REVIEW Probing of operating electrochemical interfaces by photons
... differential pumping discussed below. There are also few cases when electrochemical reactions were studied at three-phase boundaries between the electrode, UHV and a liquid electrolyte possessing an extremely low vapor pressure, namely ionic liquid.[14] Although such studies give important clues for ...
... differential pumping discussed below. There are also few cases when electrochemical reactions were studied at three-phase boundaries between the electrode, UHV and a liquid electrolyte possessing an extremely low vapor pressure, namely ionic liquid.[14] Although such studies give important clues for ...
Quantifying and pinpointing sources of noise in optical tweezers experiments
... setup, however, requires the use of at least two laser beams and two independent detection systems. Another way to reduce drift that is often employed in optical trapping setups is to move the system of interest away from any surface subject to significant drift. This could be done by using a dual-tr ...
... setup, however, requires the use of at least two laser beams and two independent detection systems. Another way to reduce drift that is often employed in optical trapping setups is to move the system of interest away from any surface subject to significant drift. This could be done by using a dual-tr ...
Clutter elimination for deep clinical optoacoustic imaging using
... imaging plane, but are exposed to the irradiating laser light (Fig. 2a). The resulting strong OA transients, even though detected by the probe at an angle where elevational sensitivity is low, can obscure the weak OA signals from structures deep inside the tissue. Echo clutter (Fig. 2b) may be gener ...
... imaging plane, but are exposed to the irradiating laser light (Fig. 2a). The resulting strong OA transients, even though detected by the probe at an angle where elevational sensitivity is low, can obscure the weak OA signals from structures deep inside the tissue. Echo clutter (Fig. 2b) may be gener ...
Active semiconductor-based grating waveguide structures
... smaller compared to forward voltage configurations since the depletion region width decreases as the doping (and the free charge carriers concentration) increases. Therefore, the dependence of the refractive index change on the variation in charge carriers concentration is weaker in these configurat ...
... smaller compared to forward voltage configurations since the depletion region width decreases as the doping (and the free charge carriers concentration) increases. Therefore, the dependence of the refractive index change on the variation in charge carriers concentration is weaker in these configurat ...
An Optical Fiber Lateral Displacement Measurement Method and
... The signal processing methods adopted in the measurement system are similar to that used for traditional grating signals [34], such as counting, subdivision, and discerning direction. 2.2. Preliminary Theoretical Derivation The fiber-grating distance ZFG between the fiber end and the RGP has influen ...
... The signal processing methods adopted in the measurement system are similar to that used for traditional grating signals [34], such as counting, subdivision, and discerning direction. 2.2. Preliminary Theoretical Derivation The fiber-grating distance ZFG between the fiber end and the RGP has influen ...
Unit 1.6 Optical Switching - DIT School of Electronics and
... however, because of the fabrication process and miniature natures, they have different characteristics, performance and reliability concerns. MEMS use tiny reflective surfaces to redirect the light beams to a desired port by either ricocheting the light off of neighboring reflective surfaces to a po ...
... however, because of the fabrication process and miniature natures, they have different characteristics, performance and reliability concerns. MEMS use tiny reflective surfaces to redirect the light beams to a desired port by either ricocheting the light off of neighboring reflective surfaces to a po ...
ELEC425 lab 5
... Light which comes out of Port 2 (using the notation of Fig. 5.l) will be in mostly high-order modes, while the light remaining in the input fiber and coming out of Port 4 will be in mostly low-order modes. This will also have an effect on the performance of any other bidirectional couplers which are ...
... Light which comes out of Port 2 (using the notation of Fig. 5.l) will be in mostly high-order modes, while the light remaining in the input fiber and coming out of Port 4 will be in mostly low-order modes. This will also have an effect on the performance of any other bidirectional couplers which are ...
Cavity Optomechanics in the Quantum Regime
... Figure 1.1: Schematic of a gravitational wave detector. Arrows highlight the differential impact of a passing gravitational waves. Interferometer arms typically range from hundreds of meters to kilometers. ing Michelson-type laser interferometers. Gravity waves passing through the Earth would push a ...
... Figure 1.1: Schematic of a gravitational wave detector. Arrows highlight the differential impact of a passing gravitational waves. Interferometer arms typically range from hundreds of meters to kilometers. ing Michelson-type laser interferometers. Gravity waves passing through the Earth would push a ...
Variability in ultraviolet total optical depth during the Southern
... at Mt Wilson. These radiometers have 2 nm nominal fullwidth at half-maximum "lters whose center wavelengths are 300.4, 305.7, 312.0, 318.1, 325.9, 332.9 and 367.8 nm. Bigelow et al. (1998) have shown that integrated out-ofband light contamination is less than 0.5%. A shadowband blocks the direct sol ...
... at Mt Wilson. These radiometers have 2 nm nominal fullwidth at half-maximum "lters whose center wavelengths are 300.4, 305.7, 312.0, 318.1, 325.9, 332.9 and 367.8 nm. Bigelow et al. (1998) have shown that integrated out-ofband light contamination is less than 0.5%. A shadowband blocks the direct sol ...
Generation of diffractive optical elements onto a photopolymer using a
... memories. Among the different photopolymer compositions, polyvinyl-alcohol/acrylamide (PVA/AA) materials is one of the promising materials in these applications and they have been deeply analyzed in holography [10][11][12] and data storage [13]. In the last years, some studies have been carried out ...
... memories. Among the different photopolymer compositions, polyvinyl-alcohol/acrylamide (PVA/AA) materials is one of the promising materials in these applications and they have been deeply analyzed in holography [10][11][12] and data storage [13]. In the last years, some studies have been carried out ...
Measuring amplitude and phase in optical fields with
... its amplitude, its phase and its polarization state. The main task in this work was to build a set-up in order to be able to measure the amplitude and the phase of optical fields with sub-wavelength resolution. We are positively convinced that in the future, optical amplitude and phase measurement c ...
... its amplitude, its phase and its polarization state. The main task in this work was to build a set-up in order to be able to measure the amplitude and the phase of optical fields with sub-wavelength resolution. We are positively convinced that in the future, optical amplitude and phase measurement c ...