Reference Guide to Fiber Optic Testing Glossary Reference Guide to Fib
... 1550 nm. This fiber type is not suitable for DWDM applications, due to its high nonlinearity at the zero-dispersion wavelength. These fibers have been normalized by the ITU as G.653. Dispersion Supported Transmission (DST) In optical time division multiplexing (OTDM) systems, a transmission system t ...
... 1550 nm. This fiber type is not suitable for DWDM applications, due to its high nonlinearity at the zero-dispersion wavelength. These fibers have been normalized by the ITU as G.653. Dispersion Supported Transmission (DST) In optical time division multiplexing (OTDM) systems, a transmission system t ...
Lithium ionization by an intense laser field using classical ensemble
... He2+ to He+ under the same conditions. We think it may be due to the fact that the initial ionization of Li can produce a highly excited autoionizing state of Li+. The autoionizing state of the ion could easily decay in an electric field by emitting one electron, causing a double ionization. This co ...
... He2+ to He+ under the same conditions. We think it may be due to the fact that the initial ionization of Li can produce a highly excited autoionizing state of Li+. The autoionizing state of the ion could easily decay in an electric field by emitting one electron, causing a double ionization. This co ...
PHY332 Atomic and Laser Physics AM FOX
... Atomic Physics is the subject that studies the inner workings of the atom. It remains one of the most important testing grounds for quantum theory, and is therefore a very area of active research, both for its contribution to fundamental physics and to technology. Furthermore, many other branches of ...
... Atomic Physics is the subject that studies the inner workings of the atom. It remains one of the most important testing grounds for quantum theory, and is therefore a very area of active research, both for its contribution to fundamental physics and to technology. Furthermore, many other branches of ...
Trapping and cooling rubidium atoms for quantum information
... large single wave function of the whole ensemble builds up, essentially leaving all the atoms in a precisely defined, macroscopic collective quantum state. The discovery of micro- and nano-Kelvin samples of dilute atomic gases opened a new approach to long standing theoretical predictions [9]. Bose- ...
... large single wave function of the whole ensemble builds up, essentially leaving all the atoms in a precisely defined, macroscopic collective quantum state. The discovery of micro- and nano-Kelvin samples of dilute atomic gases opened a new approach to long standing theoretical predictions [9]. Bose- ...
Quantum Correlation Experiments with Resonance Fluorescence
... emitted as packets of light. Einstein then implied in a rate-equation model of the energy exchange between light and a black-body, that these light packets, which were later called photons, can be absorbed and spontaneously or stimulated emitted by atoms. It was then the use of the stimulated emissi ...
... emitted as packets of light. Einstein then implied in a rate-equation model of the energy exchange between light and a black-body, that these light packets, which were later called photons, can be absorbed and spontaneously or stimulated emitted by atoms. It was then the use of the stimulated emissi ...
K.C. Neuman and S.M. Block, "Optical Trapping"
... photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. However, if there is a steep intensity gradient (i.e., near t ...
... photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. However, if there is a steep intensity gradient (i.e., near t ...
Attosecond real time observation of ionization and electron
... of our perception. Since the first demonstration of a laser some 40 years ago, these sources of coherent light play an important role in science. Based on laser sources, a plurality of effects in atomic and molecular physics has been studied and light-matter interaction in general is a fast growing ...
... of our perception. Since the first demonstration of a laser some 40 years ago, these sources of coherent light play an important role in science. Based on laser sources, a plurality of effects in atomic and molecular physics has been studied and light-matter interaction in general is a fast growing ...
Rubidium resonant squeezed light from a diode-pumped
... quasi-stationary uctuations. Our analysis shows that the system can be made immune to random frequency drifts. Ecient interaction of the squeezed light with the atomic ensembles requires its wavelength to be resonant to the respective atomic transition. At the time when this thesis started and the ...
... quasi-stationary uctuations. Our analysis shows that the system can be made immune to random frequency drifts. Ecient interaction of the squeezed light with the atomic ensembles requires its wavelength to be resonant to the respective atomic transition. At the time when this thesis started and the ...
Bertolotti M. The history of the laser
... did not answer the questions concerning the nature of light and how it is produced. During the Middle Ages, when problems of nature were discussed on the basis of Aristotelian philosophy, according to which the ‘nature’ of things consists of the reasons for their existence, that is in their ultimate ...
... did not answer the questions concerning the nature of light and how it is produced. During the Middle Ages, when problems of nature were discussed on the basis of Aristotelian philosophy, according to which the ‘nature’ of things consists of the reasons for their existence, that is in their ultimate ...
Development of a Tm3+-doped Fluoride Glass - DORAS
... The development of a fluoride fibre laser for hydrocarbon gas sensing is discussed. The use of a fibre laser as a source for optical sensing has many advantages including small size and ease of adaptability into industrial systems. The fibre laser constructed in this work has an operating wavelength ...
... The development of a fluoride fibre laser for hydrocarbon gas sensing is discussed. The use of a fibre laser as a source for optical sensing has many advantages including small size and ease of adaptability into industrial systems. The fibre laser constructed in this work has an operating wavelength ...
POLITECNICO DI MILANO Polo Regionale di Lecco Faculty of
... system. Method of controlling the transient behaviour for generated pulses (in nano seconds region) is by acusto optic Q- switched device. Specifically, the amount of time required for laser pulse to reach peak power, number of pulses before nominal power reached and pulse width are measured conside ...
... system. Method of controlling the transient behaviour for generated pulses (in nano seconds region) is by acusto optic Q- switched device. Specifically, the amount of time required for laser pulse to reach peak power, number of pulses before nominal power reached and pulse width are measured conside ...
Get PDF - OSA Publishing
... establishment of a “bridge” linking both ends of the electromagnetic spectrum between them. Following this discovery, the principle of optical frequency division of an ultra-pure laser to much lower frequencies (microwave frequency range), using an optical frequency comb featuring a mode spacing of ...
... establishment of a “bridge” linking both ends of the electromagnetic spectrum between them. Following this discovery, the principle of optical frequency division of an ultra-pure laser to much lower frequencies (microwave frequency range), using an optical frequency comb featuring a mode spacing of ...
pdf, 400 KB
... biological and medical imaging, as well as for detection of chemical and biological agents. This underdevelopment is primarily due to the lack of coherent solid-state terahertz sources that can provide convenient radiation intensities (greater than a mW) and continuous-wave (CW) operation. The terah ...
... biological and medical imaging, as well as for detection of chemical and biological agents. This underdevelopment is primarily due to the lack of coherent solid-state terahertz sources that can provide convenient radiation intensities (greater than a mW) and continuous-wave (CW) operation. The terah ...
Laser Beams and Resonators
... placed on formulations and derivations which lead to basic understanding and on results which bear practical significance. 1. INTRODUCTION ...
... placed on formulations and derivations which lead to basic understanding and on results which bear practical significance. 1. INTRODUCTION ...
Full text - UvA/FNWI - University of Amsterdam
... If the wavelength of the light is much larger than the size of the atom, variations of the phase ...
... If the wavelength of the light is much larger than the size of the atom, variations of the phase ...
High-Temperature Operation of Terahertz Quantum Cascade Laser
... widely tunable THz sources that are suitable for production in large quantities. The power generated by electronic devices (e.g., backward wave oscillators, Gunn and resonant tunneling diode oscillators, and Schottky diode multipliers) is currently well below the milliwatt level for frequencies abov ...
... widely tunable THz sources that are suitable for production in large quantities. The power generated by electronic devices (e.g., backward wave oscillators, Gunn and resonant tunneling diode oscillators, and Schottky diode multipliers) is currently well below the milliwatt level for frequencies abov ...
Gaussian Beam Optics [Hecht Ch. 13.1 pages 594
... In the following section, Gaussian Beam Propagation, we will treat the characteristics of a theoretical Gaussian beam (M2=1); then, in the section Real Beam Propagation we will show how these characteristics change as the beam deviates from the theoretical. In all cases, a circularly symmetric wavef ...
... In the following section, Gaussian Beam Propagation, we will treat the characteristics of a theoretical Gaussian beam (M2=1); then, in the section Real Beam Propagation we will show how these characteristics change as the beam deviates from the theoretical. In all cases, a circularly symmetric wavef ...
Trapping of Rubidium Atoms using Optical Tweezers
... components of a quantum network. A quantum network combines matter based stationary quantum objects as nodes with quantum connections, like photons. These challenges can be addressed by the use of isolated quantum systems, such as trapped ions in quantum computing and entanglement experiments [13,14 ...
... components of a quantum network. A quantum network combines matter based stationary quantum objects as nodes with quantum connections, like photons. These challenges can be addressed by the use of isolated quantum systems, such as trapped ions in quantum computing and entanglement experiments [13,14 ...
Everything You Always Wanted to Know About Optical
... • A complete system requires a mux+demux for TX and RX. • Most modern devices function the same in both directions, as a mux or demux, so the actual device is the same. • Many vendors combine the mux+demux into a single unit for simplicity, but it is really 2 distinct components. ...
... • A complete system requires a mux+demux for TX and RX. • Most modern devices function the same in both directions, as a mux or demux, so the actual device is the same. • Many vendors combine the mux+demux into a single unit for simplicity, but it is really 2 distinct components. ...
Ultrashort, Strongly Focused Laser Pulses in Free Space
... Technological advances in ultrafast optics now allow the generation of laser pulses whose duration is as short as a few optical cycles of the electric field; furthermore, these pulses can be focused to a spot size comparable to the wavelength. These strongly focused, ultrashort laser pulses have fou ...
... Technological advances in ultrafast optics now allow the generation of laser pulses whose duration is as short as a few optical cycles of the electric field; furthermore, these pulses can be focused to a spot size comparable to the wavelength. These strongly focused, ultrashort laser pulses have fou ...
A very convenient setup to generate intense VUV coherent light at
... is observed in a spectral region of positive dispersion of nonlinear medium, where phasematching is not satisfied under tight-focusing conditions. Until the present, the reason for efficient VUV generation at 125.140 nm has been an open question. (ii) On the contrary, sum generation at 125.053 nm corr ...
... is observed in a spectral region of positive dispersion of nonlinear medium, where phasematching is not satisfied under tight-focusing conditions. Until the present, the reason for efficient VUV generation at 125.140 nm has been an open question. (ii) On the contrary, sum generation at 125.053 nm corr ...
Laser pulse trains for controlling excited state - diss.fu
... Split, Croatia, e Texas Tech University, Department of Chemistry & Biochemistry, Memorial Circle & Boston, Lubbock, TX 79409-1061, USA ...
... Split, Croatia, e Texas Tech University, Department of Chemistry & Biochemistry, Memorial Circle & Boston, Lubbock, TX 79409-1061, USA ...
Beam Diagnostics 2 - ab-abp-frankz
... principle: laser provides a non-invasive and non-destructable target by splitting and recombining the laser light a standing wave (sw) is made the intercepting beam produces Compton-scattered photons of high density in the sw-peaks and of low density in the sw-valleys constituents: laser, optical tr ...
... principle: laser provides a non-invasive and non-destructable target by splitting and recombining the laser light a standing wave (sw) is made the intercepting beam produces Compton-scattered photons of high density in the sw-peaks and of low density in the sw-valleys constituents: laser, optical tr ...
fisica e…
... nanometer scale, the related tuning of the electronic energy, the electron localization, the transport as well as the optical transition processes. The main feature of the QCL is the possibility to tune its emission frequency over a wide range by tailoring the thickness of quantum wells and barriers ...
... nanometer scale, the related tuning of the electronic energy, the electron localization, the transport as well as the optical transition processes. The main feature of the QCL is the possibility to tune its emission frequency over a wide range by tailoring the thickness of quantum wells and barriers ...
Technical Digest Post-Deadline Papers
... without needing any changes to its basic optical structure to be applicable for the medium. Until recently, BD read-onlymemory discs of 100 and 200 GB with 4 and 8 layers, respectively, have been developed and signals from the discs have been read out successfully. [1, 2] However, to effectively use ...
... without needing any changes to its basic optical structure to be applicable for the medium. Until recently, BD read-onlymemory discs of 100 and 200 GB with 4 and 8 layers, respectively, have been developed and signals from the discs have been read out successfully. [1, 2] However, to effectively use ...
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.