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... Four-wave mixing (FWM) is a nonlinear optical effect that generates light with different frequencies and different quantum properties. Experimental and theoretical studies show that atomic coherence of the electromagnetically induced transparency (EIT) plays a critical role in the nonlinear wave-mix ...
... Four-wave mixing (FWM) is a nonlinear optical effect that generates light with different frequencies and different quantum properties. Experimental and theoretical studies show that atomic coherence of the electromagnetically induced transparency (EIT) plays a critical role in the nonlinear wave-mix ...
New concept of laser fusion driver using Stimulated Brillouin
... phases are not matched. 2. Phase difference between the beams should be less than /4 for constructive interference at the boundary of the combination not give spatial spiking. 3. It is necessary to control the phases of the SBS waves to match the phase difference between the neighboring beams less ...
... phases are not matched. 2. Phase difference between the beams should be less than /4 for constructive interference at the boundary of the combination not give spatial spiking. 3. It is necessary to control the phases of the SBS waves to match the phase difference between the neighboring beams less ...
Femtosecond Frequency Combs for Optical Clocks and Timing
... timing and frequency stabilization applications of optical frequency combs. I first present a microwave technique for synchronizing two independent modelocked lasers at a level of timing precision less than the duration of an optical cycle, below 1 fs of residual rms timing jitter. Using these synch ...
... timing and frequency stabilization applications of optical frequency combs. I first present a microwave technique for synchronizing two independent modelocked lasers at a level of timing precision less than the duration of an optical cycle, below 1 fs of residual rms timing jitter. Using these synch ...
Fiber Bragg Gratings (FBGs)
... with this coating package, every year. The coating package design gives the best compromise between mechanical protection and usability, ensuring rugged performance whilst still being easy to strip and clean. To overcome the problems of micro-bends it is advisable to use SHB1250 spun HiBi fiber wher ...
... with this coating package, every year. The coating package design gives the best compromise between mechanical protection and usability, ensuring rugged performance whilst still being easy to strip and clean. To overcome the problems of micro-bends it is advisable to use SHB1250 spun HiBi fiber wher ...
Effective Area of Optical Fibres
... fibre at a given wavelength no longer increases linearly with the input power at that wavelength. Nonlinearity in fibres essentially appears as the conversion of power from one wavelength to another. Examples of nonlinearities include: self-phase modulation (SPM), cross-phase modulation (XPM), four- ...
... fibre at a given wavelength no longer increases linearly with the input power at that wavelength. Nonlinearity in fibres essentially appears as the conversion of power from one wavelength to another. Examples of nonlinearities include: self-phase modulation (SPM), cross-phase modulation (XPM), four- ...
A mobile, high-precision atom-interferometer and its
... and the rotation axis of the Earth. The sum of both forces determines the acceleration all matter is subjected to. Throughout this thesis and in accordance with literature [8, 9] the term “gravity acceleration” or shorter “gravity” will denote the combined effect of the gravitational acceleration an ...
... and the rotation axis of the Earth. The sum of both forces determines the acceleration all matter is subjected to. Throughout this thesis and in accordance with literature [8, 9] the term “gravity acceleration” or shorter “gravity” will denote the combined effect of the gravitational acceleration an ...
Optical contrast and clarity of graphene on an
... signal-to-noise ratio 共SNR兲 determines how clearly graphene can be “seen,” where the SNR is defined as the ratio of the net signal value to the root mean square noise of background. For a thin film deposited on a substrate with reflectance R, the net signal 共e.g., from graphene兲 is P0⌬R, where P0 is ...
... signal-to-noise ratio 共SNR兲 determines how clearly graphene can be “seen,” where the SNR is defined as the ratio of the net signal value to the root mean square noise of background. For a thin film deposited on a substrate with reflectance R, the net signal 共e.g., from graphene兲 is P0⌬R, where P0 is ...
High-Q Microresonators as Lasing Elements for Silicon Photonics
... photonics technologies are chip-to-chip and intra-chip optical interconnects. Now that compact high-speed modulators in silicon have been achieved, the limiting factor in the widespread adoption of optical interconnects is the lack of practical on-chip optical sources. These sources are critical for ...
... photonics technologies are chip-to-chip and intra-chip optical interconnects. Now that compact high-speed modulators in silicon have been achieved, the limiting factor in the widespread adoption of optical interconnects is the lack of practical on-chip optical sources. These sources are critical for ...
Fabrication of Cube Beamsplitters for White Light Interferometry
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
Lock Acquisition and Sensitivity Analysis of Advanced LIGO
... The first part of this thesis is devoted to the description of methods for bringing the interferometer into linear regime when collection of data becomes possible. States of longitudinal and angular controls of interferometer degrees of freedom during lock acquisition process and in low noise config ...
... The first part of this thesis is devoted to the description of methods for bringing the interferometer into linear regime when collection of data becomes possible. States of longitudinal and angular controls of interferometer degrees of freedom during lock acquisition process and in low noise config ...
Recent advances in diffuse optical imaging
... away from the pursuit of high (∼ mm) spatial resolution and towards functional imaging. It is widely appreciated that diffuse optical imaging can never compete in terms of spatial resolution with anatomical imaging techniques (e.g. x-radiography, ultrasound and magnetic resonance imaging (MRI)), but ...
... away from the pursuit of high (∼ mm) spatial resolution and towards functional imaging. It is widely appreciated that diffuse optical imaging can never compete in terms of spatial resolution with anatomical imaging techniques (e.g. x-radiography, ultrasound and magnetic resonance imaging (MRI)), but ...
K.C. Neuman and S.M. Block, "Optical Trapping"
... aperture can cause heating and thermal expansion of the objective, resulting in comparatively large 共⬃m兲 axial motions when the intensity is changed. Axial trapping efficiency can also be improved through the use of “donut” mode trap* mode or Laguerre-Gaussian ping beams, such as the TEM01 beams, w ...
... aperture can cause heating and thermal expansion of the objective, resulting in comparatively large 共⬃m兲 axial motions when the intensity is changed. Axial trapping efficiency can also be improved through the use of “donut” mode trap* mode or Laguerre-Gaussian ping beams, such as the TEM01 beams, w ...
Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors
... drop of perspiration, and plant exudates). The polymer fibers (POF) for the visible spectra range are often used in industry, biology and medicine due to their low cost and mechanical properties [18,30–33]. This type of fibers compared with silica base fibers is more flexible and cheaper. Their nume ...
... drop of perspiration, and plant exudates). The polymer fibers (POF) for the visible spectra range are often used in industry, biology and medicine due to their low cost and mechanical properties [18,30–33]. This type of fibers compared with silica base fibers is more flexible and cheaper. Their nume ...
Graded Index Fiber
... a diameter of 50 μm. The fiber has a numerical aperture of 0.2. Estimate the total number of guided modes propagating in the fiber when it is operating at a wavelength of ...
... a diameter of 50 μm. The fiber has a numerical aperture of 0.2. Estimate the total number of guided modes propagating in the fiber when it is operating at a wavelength of ...