diffraction gratings
... First order wavelengths between 200 and 380 nm may be monitored without filters because wavelengths below 190 nm are absorbed by air. If, however, the instrument is evacuated or N2 purged, higher order filters would again be required. 1.5 Resolving "Power" ...
... First order wavelengths between 200 and 380 nm may be monitored without filters because wavelengths below 190 nm are absorbed by air. If, however, the instrument is evacuated or N2 purged, higher order filters would again be required. 1.5 Resolving "Power" ...
MEMS Corner Cube Retroreflectors for Free-Space
... Wireless communication systems are generating significant interest because they provide increased mobility and a means to create communication links where wired links cannot be made. Today, both RF and optical links are being employed in numerous applications. The choice of whether to use an RF link ...
... Wireless communication systems are generating significant interest because they provide increased mobility and a means to create communication links where wired links cannot be made. Today, both RF and optical links are being employed in numerous applications. The choice of whether to use an RF link ...
Refractive-Index-Matched Indium--Tin
... components of the LCD until it reaches the screen. However, due to optical loss mechanisms at each component, less than 5% of total light output from the BLU light source is usually available at the screen.1) The LC is sandwiched between two indium–tin-oxide (ITO) electrodes which are used to induce ...
... components of the LCD until it reaches the screen. However, due to optical loss mechanisms at each component, less than 5% of total light output from the BLU light source is usually available at the screen.1) The LC is sandwiched between two indium–tin-oxide (ITO) electrodes which are used to induce ...
Femtosecond Laser Pulses: Linear Properties
... research and for applications: The ultrashort pulse duration for example allows to freeze the motion of electrons and molecules by making use of so called pump probe techniques that work similar to strobe light techniques. In chemistry complex reaction dynamics have been measured directly in the tim ...
... research and for applications: The ultrashort pulse duration for example allows to freeze the motion of electrons and molecules by making use of so called pump probe techniques that work similar to strobe light techniques. In chemistry complex reaction dynamics have been measured directly in the tim ...
1 - Foundation for Research and Technology
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
The Michelson Interferometer Wavelength Meter
... The interferogram for the LED starts to reduce away from the zero path-length delay because the phase fluctuations of the two delayed arms are uncorrelated for large pathlength difference Michelson interferometers with low coherence sources inputs can be used for highresolution reflectometry Termino ...
... The interferogram for the LED starts to reduce away from the zero path-length delay because the phase fluctuations of the two delayed arms are uncorrelated for large pathlength difference Michelson interferometers with low coherence sources inputs can be used for highresolution reflectometry Termino ...
Introduction to Diffraction Grating
... These gratings are special low period gratings designed for use in the high orders. They are generally used with a second grating or prism to separate overlapping diffracted orders. The resolution of an Echelle grating built on a precision glass substrate is typically 80-90% of the maximum theoretic ...
... These gratings are special low period gratings designed for use in the high orders. They are generally used with a second grating or prism to separate overlapping diffracted orders. The resolution of an Echelle grating built on a precision glass substrate is typically 80-90% of the maximum theoretic ...
Doctorat doc
... and minimum loss (1550nm) wavelengths of silica. Such fibers provide the backbone of modern optical telecommunication networks. Since the late 1970s these fibers has been manufactured routinely. It is possible to manufacture very long fibers with very low attenuation (0.2dB/km). Multicomponent glass ...
... and minimum loss (1550nm) wavelengths of silica. Such fibers provide the backbone of modern optical telecommunication networks. Since the late 1970s these fibers has been manufactured routinely. It is possible to manufacture very long fibers with very low attenuation (0.2dB/km). Multicomponent glass ...
Ultrasensitive absorption spectroscopy with a high
... comparable to the intrinsic cavity loss, the gain rolls off as the absorption begins to limit the effective number of passes rather than the losses at the mirrors. The above analysis shows that the cavity provides tremendous signal gains even if the cavity resonances are completely suppressed. In fa ...
... comparable to the intrinsic cavity loss, the gain rolls off as the absorption begins to limit the effective number of passes rather than the losses at the mirrors. The above analysis shows that the cavity provides tremendous signal gains even if the cavity resonances are completely suppressed. In fa ...
Multiterawatt few-cycle pulse OPCPA
... • Self- and cross-action effects The accumulation of higher order nonlinear effects in OPCPA is much smaller than in conventional amplifiers. Nevertheless, effects like cross-phase-modulation start to play a role at high pump intensities and/or at large signal energies on the order of the pump energy (i ...
... • Self- and cross-action effects The accumulation of higher order nonlinear effects in OPCPA is much smaller than in conventional amplifiers. Nevertheless, effects like cross-phase-modulation start to play a role at high pump intensities and/or at large signal energies on the order of the pump energy (i ...
Modeling and simulation of surface profile forming process of
... focal length often requires syringe pump and pressure sensor connected to the microlenses. It adds the complexity of the device, especially for array structure. In addition, they are normally fabricated piece by piece, not very suitable for batch fabrication. UV lithography of SU-8 has been widely u ...
... focal length often requires syringe pump and pressure sensor connected to the microlenses. It adds the complexity of the device, especially for array structure. In addition, they are normally fabricated piece by piece, not very suitable for batch fabrication. UV lithography of SU-8 has been widely u ...
Study on the Sensing Coating of the Optical Fibre CO2 Sensor
... Carbon dioxide sensors were prepared according to the procedure described below. A 12 cm fragment of a plastic clad silica optical fibre was stripped of its acrylic coating by immersing it for 60 s in dichloromethane and subsequent manual taking off the softened polymer. Afterwards we have coated th ...
... Carbon dioxide sensors were prepared according to the procedure described below. A 12 cm fragment of a plastic clad silica optical fibre was stripped of its acrylic coating by immersing it for 60 s in dichloromethane and subsequent manual taking off the softened polymer. Afterwards we have coated th ...
Limits of lithography - Proceedings of the IEEE
... in principle since the aperture of the lens now must cover the zero and one of the first diffracted orders, whereas in a conventional system the aperture covers the span of the 1 to 1 orders. In practice, however, this method is limited by the fact that the illumination must be tailored to the mask ...
... in principle since the aperture of the lens now must cover the zero and one of the first diffracted orders, whereas in a conventional system the aperture covers the span of the 1 to 1 orders. In practice, however, this method is limited by the fact that the illumination must be tailored to the mask ...
EXPERIMENT 06 Helium Neon Laser
... The 3s state is populated by Helium atoms of the 21S0, state as a result of an atomic collision. The 3s state consists of 4 sub-states out of which it is primarily the 3s2 state which has been populated through the collision process. The population density of the other 3s sub-states is app. 400 time ...
... The 3s state is populated by Helium atoms of the 21S0, state as a result of an atomic collision. The 3s state consists of 4 sub-states out of which it is primarily the 3s2 state which has been populated through the collision process. The population density of the other 3s sub-states is app. 400 time ...
MEMS Based Heavy Metal Detector Inas Raafat Ramsis
... symmetrically two semi Gaussian beam is introduced using V shape mirror. The design is fully integrated and can operate in the Infrared and visible region. The analysis shows that, a minimum resolution of 9nm at a wavelength of 1.45μm and a mechanical displacement of 160μm is achievable. Unlike the ...
... symmetrically two semi Gaussian beam is introduced using V shape mirror. The design is fully integrated and can operate in the Infrared and visible region. The analysis shows that, a minimum resolution of 9nm at a wavelength of 1.45μm and a mechanical displacement of 160μm is achievable. Unlike the ...
Non-Magneto-Optic Waveguide Isolator Namkhun Srisanit , Non-member
... that are totally internally reflected by the outer bending boundary of the waveguide form stable guided modes (Eigen-modes), while those modes bounced between the inner and outer surface boundary of the waveguide form unstable modes. The unstable modes are partially converted to the stable modes thro ...
... that are totally internally reflected by the outer bending boundary of the waveguide form stable guided modes (Eigen-modes), while those modes bounced between the inner and outer surface boundary of the waveguide form unstable modes. The unstable modes are partially converted to the stable modes thro ...
(DPSS) Lasers - Society of Education
... pumped by Ross in 1968 [6], although another rare earth ion, Dy2+, had earlier been pumped by an array of light emitting diodes. The early study on DPSS lasers used a transverse pumping geometry which is convenient when using a number of sources with poor beam quality. Longitudinally or end pumped D ...
... pumped by Ross in 1968 [6], although another rare earth ion, Dy2+, had earlier been pumped by an array of light emitting diodes. The early study on DPSS lasers used a transverse pumping geometry which is convenient when using a number of sources with poor beam quality. Longitudinally or end pumped D ...
LINEAR AND NONLINEAR LIGHT BULLETS: RECENT
... 5(a)), instead of a single one as in other two-dimensional and three-dimensional nondissipative (Hamiltonian) nonlinear dynamical systems. This unique two-cusp structure of the soliton norm-Hamiltonian diagram is known as the so-called “swallowtail” catastrophe; see, e.g., Ref. [34]. Typical spatial ...
... 5(a)), instead of a single one as in other two-dimensional and three-dimensional nondissipative (Hamiltonian) nonlinear dynamical systems. This unique two-cusp structure of the soliton norm-Hamiltonian diagram is known as the so-called “swallowtail” catastrophe; see, e.g., Ref. [34]. Typical spatial ...
Soliton Interactions and the Formation of Solitonic Patterns
... 1.1 Solitons and the dynamics of pattern formation Everyone in America knows what a fractal is. Take a stroll around any college campus and you will pass by young computer scientists wearing T-shirts emblazoned with brightly colored spiraling patterns. In the corporate world, fractals thrive in the ...
... 1.1 Solitons and the dynamics of pattern formation Everyone in America knows what a fractal is. Take a stroll around any college campus and you will pass by young computer scientists wearing T-shirts emblazoned with brightly colored spiraling patterns. In the corporate world, fractals thrive in the ...
Structure and symmetry in coherent perfect polarization rotation
... phenomenological correspondences with the coherent perfect absorber (CPA, also called the antilaser) [2,3], which has been well studied [4–7]. While many optical devices such as laser wavelength locks, field sensors, optical isolators, and modulators are based on the nonreciprocal nature of Faraday ...
... phenomenological correspondences with the coherent perfect absorber (CPA, also called the antilaser) [2,3], which has been well studied [4–7]. While many optical devices such as laser wavelength locks, field sensors, optical isolators, and modulators are based on the nonreciprocal nature of Faraday ...
Document
... characteristic decay time as the resonator lifetime or photon lifetime The resonance line broadening is seen to be governed by the decay of optical energy arising from resonator losses ...
... characteristic decay time as the resonator lifetime or photon lifetime The resonance line broadening is seen to be governed by the decay of optical energy arising from resonator losses ...
Laser Medicine and Medical Imaging – J. G. Fujimoto
... window centered at the maximum of the reflection signal. The spectra obtained were normalized to the intensity maximum. The spectra at the points A and B and one intermediate point are shown in Fig. 2 (right). One clearly observes that the absorption of the spectral intensity around 1.45 µm increase ...
... window centered at the maximum of the reflection signal. The spectra obtained were normalized to the intensity maximum. The spectra at the points A and B and one intermediate point are shown in Fig. 2 (right). One clearly observes that the absorption of the spectral intensity around 1.45 µm increase ...
PDF
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
Femtosecond Frequency Combs for Optical Clocks and Timing
... Kohl and I worked together on homework and various other (sometimes mischievous, always great fun) projects. Mark Notcutt is responsible for teaching me how to make technical measurements of noise. David Jones gave me the example of building experiments efficiently and expertly. Eric Hudson and espe ...
... Kohl and I worked together on homework and various other (sometimes mischievous, always great fun) projects. Mark Notcutt is responsible for teaching me how to make technical measurements of noise. David Jones gave me the example of building experiments efficiently and expertly. Eric Hudson and espe ...
Fiber-optic communication
Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, optical fibers have largely replaced copper wire communications in core networks in the developed world. Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Researchers at Bell Labs have reached internet speeds of over 100 petabit×kilometer per second using fiber-optic communication.The process of communicating using fiber-optics involves the following basic steps: Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal.