A| ω - Enrico Rubiola
... mode instead of the previous W GE10,1,1 which increases the overall diameter slightly; this change allowed re-use of the 40K CSO silver spacer design without increasing RF losses due to the spacer. MgF2 whispering gallery (A. Savchenkov) A major challenge for this new technology is to reduce or elim ...
... mode instead of the previous W GE10,1,1 which increases the overall diameter slightly; this change allowed re-use of the 40K CSO silver spacer design without increasing RF losses due to the spacer. MgF2 whispering gallery (A. Savchenkov) A major challenge for this new technology is to reduce or elim ...
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... et al. [17] of U.S. MicroE successfully used the optical path design of natural interference to complete the optical encoder pickup head. They indicated that the tolerance of pickup head for grating scale could be improved greatly by using wavefront compensation. In 1999, Henshaw [18] of Britain Ren ...
... et al. [17] of U.S. MicroE successfully used the optical path design of natural interference to complete the optical encoder pickup head. They indicated that the tolerance of pickup head for grating scale could be improved greatly by using wavefront compensation. In 1999, Henshaw [18] of Britain Ren ...
Laser system for the Rydberg excitation of Strontium ions
... 422 nm laser drives an almost closed dipole transition with rapid excitation and spontaneous decay. Therefore, the 422 nm photon scattering rate is very high, making this transition suitable for state detection and Doppler cooling. The ionic qubit is stored in the 5S1/2 ≡ |0i ground state and the 4D ...
... 422 nm laser drives an almost closed dipole transition with rapid excitation and spontaneous decay. Therefore, the 422 nm photon scattering rate is very high, making this transition suitable for state detection and Doppler cooling. The ionic qubit is stored in the 5S1/2 ≡ |0i ground state and the 4D ...
Analysis of a single-atom dipole trap
... Four-level model: For the fluorescence detection of a single atom in our dipole trap we use the MOT cooling laser 共CL兲, red detuned to the unperturbed hyperfine transition 5 2S1/2, F = 2 → 5 2 P3/2, F⬘ = 3 共inset of Fig. 4兲 by ⌬CL = −5⌫ 共⌫ = 2 ⫻ 6 MHz is the natural linewidth兲. To avoid optical pum ...
... Four-level model: For the fluorescence detection of a single atom in our dipole trap we use the MOT cooling laser 共CL兲, red detuned to the unperturbed hyperfine transition 5 2S1/2, F = 2 → 5 2 P3/2, F⬘ = 3 共inset of Fig. 4兲 by ⌬CL = −5⌫ 共⌫ = 2 ⫻ 6 MHz is the natural linewidth兲. To avoid optical pum ...
Single-shot implementation of dispersion-scan for the
... films with variable bandgaps [18]. Comparative studies between d-scan and FROG [19] and d-scan and SPIDER [20] have also been performed using few-cycle pulses, revealing excellent agreement between techniques. So far, single-shot d-scan is yet to be demonstrated and this is the main focus of the pre ...
... films with variable bandgaps [18]. Comparative studies between d-scan and FROG [19] and d-scan and SPIDER [20] have also been performed using few-cycle pulses, revealing excellent agreement between techniques. So far, single-shot d-scan is yet to be demonstrated and this is the main focus of the pre ...
A new integrated optical angular velocity sensor
... High sensitivity (no gain variations in the laser are expected), low cost, mechanical stability (no moving parts), low power consumption, high polarization selection and high reliability are the advantages shown by PRRGs. The main disadvantage of this technology is the need of using low-loss wavegu ...
... High sensitivity (no gain variations in the laser are expected), low cost, mechanical stability (no moving parts), low power consumption, high polarization selection and high reliability are the advantages shown by PRRGs. The main disadvantage of this technology is the need of using low-loss wavegu ...
Research paper : FIBER OPTIC CABLES FOR
... MEI Technologies, 7404 Executive Place, Suite 500, Seabrook, MD 20706 USA ABSTRACT Lasers with high peak power pulses are commonly used in spaceflight missions for a wide range of applications, from LIDAR systems to optical communications. Due to the high optical power needed, the laser has to be lo ...
... MEI Technologies, 7404 Executive Place, Suite 500, Seabrook, MD 20706 USA ABSTRACT Lasers with high peak power pulses are commonly used in spaceflight missions for a wide range of applications, from LIDAR systems to optical communications. Due to the high optical power needed, the laser has to be lo ...
population inversion - Széchenyi István Egyetem
... Quantum well lasers In the Auger recombination the energy which is released via an electron-hole recombination is absorbed by an other electron, which dissipates the energy ...
... Quantum well lasers In the Auger recombination the energy which is released via an electron-hole recombination is absorbed by an other electron, which dissipates the energy ...
The AntIer-Townes effect revisited
... allowed spontaneous transitions between dressed states correspond to pairs of levels between which the atomic dipole moment operator d has a nonzero matrix element. ln the uncoupled basis, d, which cannot change the quantum number N, couples only Ib,N) and la, N). The two dressed states 11(N)) and 1 ...
... allowed spontaneous transitions between dressed states correspond to pairs of levels between which the atomic dipole moment operator d has a nonzero matrix element. ln the uncoupled basis, d, which cannot change the quantum number N, couples only Ib,N) and la, N). The two dressed states 11(N)) and 1 ...
A pulsed dye laser for photo-ionization of magnesium atoms
... are rst selectively excited on resonant transitions and then ionized. Hence, only the desired species will have a signicant ionization probability. This process also allows for isotope selectivity, if the spectral width of resonant transition and the line width of the exciting laser are both small ...
... are rst selectively excited on resonant transitions and then ionized. Hence, only the desired species will have a signicant ionization probability. This process also allows for isotope selectivity, if the spectral width of resonant transition and the line width of the exciting laser are both small ...
Theoretical study on Brillouin fiber laser sensor Omer Kotlicki, Jacob Scheuer,
... the phase element is needed. Although such control is difficult in integrated optics, tunable fiber couplers are available and fiber Bragg grating mirrors can be tension-controlled to produce the necessary reflection coefficient. In addition, fiber optics possesses extremely low loss which is import ...
... the phase element is needed. Although such control is difficult in integrated optics, tunable fiber couplers are available and fiber Bragg grating mirrors can be tension-controlled to produce the necessary reflection coefficient. In addition, fiber optics possesses extremely low loss which is import ...
Normal-Incidence Photoemission Electron Microscopy (NI
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the n ...
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the n ...
Understanding Laser Beam Parameters Leads to Better System
... minimum diameter and divergence angle. It is a measure of how well photons in the beam are localized in the transverse plane as they propagate. Acc. to the uncertainty principle, there is a minimum possible product of waist diameter times divergence, corresponding to a diffraction-limited beam. Beam ...
... minimum diameter and divergence angle. It is a measure of how well photons in the beam are localized in the transverse plane as they propagate. Acc. to the uncertainty principle, there is a minimum possible product of waist diameter times divergence, corresponding to a diffraction-limited beam. Beam ...
Modeling Resonant Wavelengths for Type II “W” Optical Pumping
... causes pump absorption to increase per quantum well and simultaneously lowers the threshold carrier density, thus requiring fewer quantum wells. Having fewer quantum wells decreases the internal loss or re-absorption of the radiation within the cavity, providing higher external differential quantum ...
... causes pump absorption to increase per quantum well and simultaneously lowers the threshold carrier density, thus requiring fewer quantum wells. Having fewer quantum wells decreases the internal loss or re-absorption of the radiation within the cavity, providing higher external differential quantum ...
IMPORTANT FEATURES FOR A RIGHT - pi
... There are different kinds of refractive beam shapers of field mapping type used to transform the laser intensity distribution in order to get improvements or special effects in various laser technologies like welding, cladding, hardening, laser techniques in photovoltaics, etc. A right choice of a s ...
... There are different kinds of refractive beam shapers of field mapping type used to transform the laser intensity distribution in order to get improvements or special effects in various laser technologies like welding, cladding, hardening, laser techniques in photovoltaics, etc. A right choice of a s ...
EE 420 - Optical Fiber Communications Lab
... 1- Plot the longitudinal misalignment loss [ Lz P( z ) P(0) ] versus z in millimeter, where P ( z ) is the dBm powers recorded in table 1 and Lz is longitudinal alignment loss in dB. [Recall: the difference between dBm powers results in dB power loss. There is no such thing as dBm power loss]. 2 ...
... 1- Plot the longitudinal misalignment loss [ Lz P( z ) P(0) ] versus z in millimeter, where P ( z ) is the dBm powers recorded in table 1 and Lz is longitudinal alignment loss in dB. [Recall: the difference between dBm powers results in dB power loss. There is no such thing as dBm power loss]. 2 ...
Capdessus-PP2014-γ-ray-generation-enhancement
... energy 500 J. This will permit to study new physical regimes where the charge separation field plays an important role and which have never been explored in experiment. This is very promising for many applications, as in the cancer therapy, radiography, and fast ignition of inertial fusion reaction ...
... energy 500 J. This will permit to study new physical regimes where the charge separation field plays an important role and which have never been explored in experiment. This is very promising for many applications, as in the cancer therapy, radiography, and fast ignition of inertial fusion reaction ...
Development of a Total Internal Reflection Illumination System for
... Many cell surface receptors consist of multiple subunits that non-‐covalently associate to form a complete receptor. The integrin receptor is one such example. It is hypothesized that a drug (Thioridazine) ...
... Many cell surface receptors consist of multiple subunits that non-‐covalently associate to form a complete receptor. The integrin receptor is one such example. It is hypothesized that a drug (Thioridazine) ...
Inexpensive optical tweezers for undergraduate laboratories
... The basic operation of optical tweezers can be explained by the momentum transfer associated with redirection of light at a dielectric interface. Since light carries momentum that is proportional to its energy and in the direction of propagation, the reflection and refraction of light at the interfa ...
... The basic operation of optical tweezers can be explained by the momentum transfer associated with redirection of light at a dielectric interface. Since light carries momentum that is proportional to its energy and in the direction of propagation, the reflection and refraction of light at the interfa ...
Portable Ultrafast Blue Light Sources Designed With Frequency
... pass (Fig. 2). A half-wave plate (HWP) may also be required to select the appropriate linear polarization. The phasematching conditions of all four SHG crystals investigated in this paper comfortably allow efficient and optimal blue-light generation at room temperature. In addition, the phasematchin ...
... pass (Fig. 2). A half-wave plate (HWP) may also be required to select the appropriate linear polarization. The phasematching conditions of all four SHG crystals investigated in this paper comfortably allow efficient and optimal blue-light generation at room temperature. In addition, the phasematchin ...
Time-Delay Interferometry - Center for Gravitational Wave Physics
... • In actual LISA detector, lasers will not have the same center frequencies and the spacecraft have relative motion • Laser center frequency offsets + systematic Doppler drifts due to the orbits now bring in noise from the USO’s used in the downconversion of the photodetector fringe rates • Optical ...
... • In actual LISA detector, lasers will not have the same center frequencies and the spacecraft have relative motion • Laser center frequency offsets + systematic Doppler drifts due to the orbits now bring in noise from the USO’s used in the downconversion of the photodetector fringe rates • Optical ...
Template
... illegal drugs can be detected by their characteristic absorption spectra at THz frequencies with high selectivity and resolution in applications fields as industrial quality inspection control, customs inspection and security screening. Moreover, MIR and THz radiation has no endangering effects on h ...
... illegal drugs can be detected by their characteristic absorption spectra at THz frequencies with high selectivity and resolution in applications fields as industrial quality inspection control, customs inspection and security screening. Moreover, MIR and THz radiation has no endangering effects on h ...
b1.2. generation and propagation of higher order gaussian beams
... Generation of higher order modes are interesting because of the phase singularity and the characteristic intensity distribution. In particular, the dark region is very useful to manipulate particles in single beam optical traps [1]. Large number of vortices available in higher order modes could be a ...
... Generation of higher order modes are interesting because of the phase singularity and the characteristic intensity distribution. In particular, the dark region is very useful to manipulate particles in single beam optical traps [1]. Large number of vortices available in higher order modes could be a ...
Semiconductor Lasers Using Diffused Quantum
... [4], [5], [12]–[14] with suitable selection of impurities. The corresponding impurities commonly used in the IID process are the zinc, silicon, and oxygen. The impurities used for disordering the heterostructure QW can be divided into two major categories: 1) electrically active and 2) neutral. Exam ...
... [4], [5], [12]–[14] with suitable selection of impurities. The corresponding impurities commonly used in the IID process are the zinc, silicon, and oxygen. The impurities used for disordering the heterostructure QW can be divided into two major categories: 1) electrically active and 2) neutral. Exam ...
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term ""laser"" originated as an acronym for ""light amplification by stimulated emission of radiation"". The first laser was built in 1960 by Theodore H. Maiman at Hughes Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light coherently. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light. Temporal coherence can be used to produce pulses of light as short as a femtosecond.Among their many applications, lasers are used in optical disk drives, laser printers, and barcode scanners; fiber-optic and free-space optical communication; laser surgery and skin treatments; cutting and welding materials; military and law enforcement devices for marking targets and measuring range and speed; and laser lighting displays in entertainment.