Fiber Optics - University of Calgary
... transmission of digital data at several gigabits per second (Gbps) over long distances with very low error rates ...
... transmission of digital data at several gigabits per second (Gbps) over long distances with very low error rates ...
Doppler-Free Spectroscopy MIT Department of Physics
... with the pump beam is that group which counterpropagates along this beam with the requisite velocity v < 0 that tunes the beam and atoms into resonance. The only other group of affected atoms is the group that counterpropagates with the same speed relative to the probe beam. These two velocity group ...
... with the pump beam is that group which counterpropagates along this beam with the requisite velocity v < 0 that tunes the beam and atoms into resonance. The only other group of affected atoms is the group that counterpropagates with the same speed relative to the probe beam. These two velocity group ...
Sample pages 2 PDF
... Black body radiation is the spectrum emitted from a ‘‘black body’’ (an object without any particular color) as it is heated up. ‘‘Red hot’’ iron and ‘‘yellow hot’’ iron are red and yellow because, at the temperature to which they are heated, their emission peak is *600 or *550 nm, and they look ‘‘re ...
... Black body radiation is the spectrum emitted from a ‘‘black body’’ (an object without any particular color) as it is heated up. ‘‘Red hot’’ iron and ‘‘yellow hot’’ iron are red and yellow because, at the temperature to which they are heated, their emission peak is *600 or *550 nm, and they look ‘‘re ...
Experiment Guide - Industrial Fiber Optics
... To a casual observer, light in the world around us seems to travel in a straight line. The appearance of shadows and reflections in mirrors seems to support this conclusion. The behavior of light in these instances can be explained with ordinary geometry. Light is either reflected, absorbed, scatter ...
... To a casual observer, light in the world around us seems to travel in a straight line. The appearance of shadows and reflections in mirrors seems to support this conclusion. The behavior of light in these instances can be explained with ordinary geometry. Light is either reflected, absorbed, scatter ...
PT symmetry in optics
... typically considered to be a problem. Gain, however, is important in optoelectronics because it provides a mean to induce lasing or to overcome losses. The question that arises is whether new artificially made optical structures with balanced gain and loss can be produced. Quantum mechanics is based ...
... typically considered to be a problem. Gain, however, is important in optoelectronics because it provides a mean to induce lasing or to overcome losses. The question that arises is whether new artificially made optical structures with balanced gain and loss can be produced. Quantum mechanics is based ...
Get PDF - OSA Publishing
... Trapped atomic ions have proven useful in a variety of fundamental and applied physics experiments. The beryllium ion (9 Be+ ) in particular has been used for quantum information processing [1,2], quantum simulation [3], quantum logic spectroscopy for optical atomic clocks [4,5], as well as sympathe ...
... Trapped atomic ions have proven useful in a variety of fundamental and applied physics experiments. The beryllium ion (9 Be+ ) in particular has been used for quantum information processing [1,2], quantum simulation [3], quantum logic spectroscopy for optical atomic clocks [4,5], as well as sympathe ...
Investigation of spectral gain narrowing in quantum cascade lasers
... The terahertz probe pulses are generated using a modelocked femtosecond Ti:sapphire laser and a photoconductive antenna.12 The terahertz pulses are then collimated and refocused with parabolic mirrors onto the facet of the QCLs in the cryostat. After passing through the QCLs, the transmitted teraher ...
... The terahertz probe pulses are generated using a modelocked femtosecond Ti:sapphire laser and a photoconductive antenna.12 The terahertz pulses are then collimated and refocused with parabolic mirrors onto the facet of the QCLs in the cryostat. After passing through the QCLs, the transmitted teraher ...
Lecture_Interferometer
... Let’s reuse the reflected light Place a mirror in front of the interferometer ...
... Let’s reuse the reflected light Place a mirror in front of the interferometer ...
Generation Of Coherent, Femtosecond, X-ray Pulses In The
... therefore spatially images in one direction, while spectrally dispersing in the perpendicular direction. It is also possible that the spectral broadening is due to some intrinsic single atom effects due to different possible trajectories of the emitting electron. However, this explanation is unlikel ...
... therefore spatially images in one direction, while spectrally dispersing in the perpendicular direction. It is also possible that the spectral broadening is due to some intrinsic single atom effects due to different possible trajectories of the emitting electron. However, this explanation is unlikel ...
Dynamic measurements using a Fizeau
... Dynamic metrology based on instantaneous single-frame exposure time requires a higher energy light source to reach comparable camera signal-to-noise levels as phase-scanning techniques, where interferograms are sampled over longer exposure times and multiple frames. The higher optical power require ...
... Dynamic metrology based on instantaneous single-frame exposure time requires a higher energy light source to reach comparable camera signal-to-noise levels as phase-scanning techniques, where interferograms are sampled over longer exposure times and multiple frames. The higher optical power require ...
Distributed-gain measurements of erbium
... measurement of the Rayleigh backscattering signal. Here the probe power was -40 dBm, and the curves clearly shows that the optimum length is strongly dependent of the pump power, the optimum length being 40 m for 19.8 dBm pump power, and the corresponding gain is 25.7 dB. The fiber was cut at 40 m i ...
... measurement of the Rayleigh backscattering signal. Here the probe power was -40 dBm, and the curves clearly shows that the optimum length is strongly dependent of the pump power, the optimum length being 40 m for 19.8 dBm pump power, and the corresponding gain is 25.7 dB. The fiber was cut at 40 m i ...
Ultrashort-Pulse Generation and Ultrafast Phenomena
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
Lasers and lenses - University of Toronto
... means that the focusing lens must have a focal length of 4cm or greater. There should be space for this directly opposite the BEC imaging system. According to the rules of Gaussian optics, in order to obtain the smallest spot size (focus of the laser) the largest possible lens with the shortest poss ...
... means that the focusing lens must have a focal length of 4cm or greater. There should be space for this directly opposite the BEC imaging system. According to the rules of Gaussian optics, in order to obtain the smallest spot size (focus of the laser) the largest possible lens with the shortest poss ...
Holografie – lasery
... laser have been the most ubiquitous in these applications. Recently, diode-pumped solid-state lasers (DPSS) and helium cadmium lasers (HeCd) have been used successfully in many OEM systems, and their applications will increase. Melles Griot manufactures all of these laser systems, and can provide th ...
... laser have been the most ubiquitous in these applications. Recently, diode-pumped solid-state lasers (DPSS) and helium cadmium lasers (HeCd) have been used successfully in many OEM systems, and their applications will increase. Melles Griot manufactures all of these laser systems, and can provide th ...
PowerPoint-Präsentation
... Resonantlike enhancements occur at channel closings, preferably (for even-parity ground state) with even-integer order (Wigner‘s threshold law) ...
... Resonantlike enhancements occur at channel closings, preferably (for even-parity ground state) with even-integer order (Wigner‘s threshold law) ...
A Green Laser Pointer Hazard
... item. Twenty years ago, 10 mW of coherent green light could be obtained only from research laboratory-grade lasers that cost over $100,000 and occupied much of an experimental laser table. Today's green laser pointer delivers much the same performance for less than $20, in a package the size of a sl ...
... item. Twenty years ago, 10 mW of coherent green light could be obtained only from research laboratory-grade lasers that cost over $100,000 and occupied much of an experimental laser table. Today's green laser pointer delivers much the same performance for less than $20, in a package the size of a sl ...
The European Concerted Research Action COST P14
... The idea proposed by Pr. G. Farkas which was abundantly discussed during my visit is based on the so-called “Sommerfeld precursor”. The “final product” could be the production of very high frequencies during a very (attosecond or even less) short time using a strong laser pulse and a dielectric mat ...
... The idea proposed by Pr. G. Farkas which was abundantly discussed during my visit is based on the so-called “Sommerfeld precursor”. The “final product” could be the production of very high frequencies during a very (attosecond or even less) short time using a strong laser pulse and a dielectric mat ...
properties of helium–neon lasers - UCSB Physics
... ionized He+ atoms recombine with their electrons some of the Helium atoms end up in the 1s2s-singlet state. Once in this state, the He atoms are forbidden from spontaneously making radiative transitions to lower energy states by quantum selection rules. 3 However, excited He atoms can decay through ...
... ionized He+ atoms recombine with their electrons some of the Helium atoms end up in the 1s2s-singlet state. Once in this state, the He atoms are forbidden from spontaneously making radiative transitions to lower energy states by quantum selection rules. 3 However, excited He atoms can decay through ...
Laser Spectroscopy B3 - Imperial College London
... grating mount. The PZT expands in response to a voltage from the PZT controller. The voltage can be adjusted manually. As the laser cavity length varies, because the number of waves in the cavity will stay constant (for a while), the wavelength and therefore the laser frequency will vary as well. Bu ...
... grating mount. The PZT expands in response to a voltage from the PZT controller. The voltage can be adjusted manually. As the laser cavity length varies, because the number of waves in the cavity will stay constant (for a while), the wavelength and therefore the laser frequency will vary as well. Bu ...
Laser Chemosensor with Rapid Responsivity and Inherent Memory
... at risk of being targeted by terrorists. These devices could also be employed for detecting landmines. A range of optical spectrometric and chemical analytical methods have been investigated for this application [1]. Detection limits at the femtogram level, or a few parts per billion (ppb) by volume ...
... at risk of being targeted by terrorists. These devices could also be employed for detecting landmines. A range of optical spectrometric and chemical analytical methods have been investigated for this application [1]. Detection limits at the femtogram level, or a few parts per billion (ppb) by volume ...
A simple demonstration of frustrated total internal reflection
... medium and carries energy. The coupling strength falls off nearly exponentially as the distance between the first and third media is increased. Although many authors point out the analogy to quantum tunneling,1,2 frustrated total internal reflection 共sometimes called optical tunneling兲 is an interes ...
... medium and carries energy. The coupling strength falls off nearly exponentially as the distance between the first and third media is increased. Although many authors point out the analogy to quantum tunneling,1,2 frustrated total internal reflection 共sometimes called optical tunneling兲 is an interes ...
Helium Neon Laser - Abbe School of Photonics
... split into the ordinary and extraordinary beam. Each of them experiences another index of refraction (no and ne ) depending on the angle of incidence. Also the two beams propagate in different directions, according to their index of refraction and the direction of the optic axis. In this lab, the op ...
... split into the ordinary and extraordinary beam. Each of them experiences another index of refraction (no and ne ) depending on the angle of incidence. Also the two beams propagate in different directions, according to their index of refraction and the direction of the optic axis. In this lab, the op ...
NO and N2O Detection with CEAS Method
... cavity the light is repeatedly reflected by the mirrors. In comparison to cavity ring-down spectroscopy (CRDS), the light spots on the mirrors surfaces are spatially separated and weak mode structure is occurred. It causes that the entire system is much less sensitive to instability in the cavity an ...
... cavity the light is repeatedly reflected by the mirrors. In comparison to cavity ring-down spectroscopy (CRDS), the light spots on the mirrors surfaces are spatially separated and weak mode structure is occurred. It causes that the entire system is much less sensitive to instability in the cavity an ...
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.