Simple Creative Projects from an Optics Teaching Laboratory
... As described in a separate paper at this conference [1], the core educational activity of the Stony Brook Laser Teaching Center (LTC) is learning through the development of individualized hands-on projects; one such project was discussed in detail in a second separate paper [2]. Some of these projec ...
... As described in a separate paper at this conference [1], the core educational activity of the Stony Brook Laser Teaching Center (LTC) is learning through the development of individualized hands-on projects; one such project was discussed in detail in a second separate paper [2]. Some of these projec ...
E, EE - OSA Publishing
... emitted light comes from aperturing by the boundaries of the gain medium, just as coherent light results from aperturing of an incoherent source such as an incandescent lamp. The description of amplified spontaneous emission (ASE) devices is, however, more complex, in part because the source and the ...
... emitted light comes from aperturing by the boundaries of the gain medium, just as coherent light results from aperturing of an incoherent source such as an incandescent lamp. The description of amplified spontaneous emission (ASE) devices is, however, more complex, in part because the source and the ...
Holografie – lasery
... excitation source (e.g., a power supply), and a resonator structure (mirrors or reflective surfaces aligned to reflect some or all of the emitted light back through the gain medium). Beyond these basic similarities, the lasers are all very different in their size, output, beam quality, power consump ...
... excitation source (e.g., a power supply), and a resonator structure (mirrors or reflective surfaces aligned to reflect some or all of the emitted light back through the gain medium). Beyond these basic similarities, the lasers are all very different in their size, output, beam quality, power consump ...
Helium Neon Laser - Educational Lasers
... The basics of gas lasers like resonator types and stability, coherence and mode behavior are shown in practice with this open-frame gas laser and are discussed in the comprehensive manual. By variation of the resonator mirrors (the set comprises 5 mirrors) the resonator properties and its influences ...
... The basics of gas lasers like resonator types and stability, coherence and mode behavior are shown in practice with this open-frame gas laser and are discussed in the comprehensive manual. By variation of the resonator mirrors (the set comprises 5 mirrors) the resonator properties and its influences ...
Coupling to aeroGAIN-ROD fibers
... This application note addresses how to couple signal and pump light to and from a simple reverse pumped amplifier based on an aeroGAIN-ROD fiber. Suggestions for part numbers and specifications are given. The current version of the note does not cover optimization of fiber length, end-caps or amplif ...
... This application note addresses how to couple signal and pump light to and from a simple reverse pumped amplifier based on an aeroGAIN-ROD fiber. Suggestions for part numbers and specifications are given. The current version of the note does not cover optimization of fiber length, end-caps or amplif ...
NicholasBarbutoPoster - Physics
... for the precise control of light both within and outside of the photonic crystal. In particular the emission direction, spectrum, and intensity can be affected by the band structure. We will study photoluminescence properties in one-dimensional polymeric photonic crystals containing photoluminescent ...
... for the precise control of light both within and outside of the photonic crystal. In particular the emission direction, spectrum, and intensity can be affected by the band structure. We will study photoluminescence properties in one-dimensional polymeric photonic crystals containing photoluminescent ...
Atomic spectra
... electromagnetic radiation emitted and absorbed from substances. This information has often been obtained using spectroscopes or spectrometers. When light passes through a slit and a prism (or diffraction grating) it is split into its component wavelengths as shown in figure (1). Each wavelength corr ...
... electromagnetic radiation emitted and absorbed from substances. This information has often been obtained using spectroscopes or spectrometers. When light passes through a slit and a prism (or diffraction grating) it is split into its component wavelengths as shown in figure (1). Each wavelength corr ...
New Approaches in Deep Laser Cooling of Magnesium Atoms for
... composed of two counterpropagating laser waves with opposite circular polarizations (σ+σ– configuration). Probably, since it was proposed in [11] as the effective configuration for laser cooling, it is used everywhere in a MOT (in 3D case, of course, one have three pairs of σ+ and σ– waves). In this ...
... composed of two counterpropagating laser waves with opposite circular polarizations (σ+σ– configuration). Probably, since it was proposed in [11] as the effective configuration for laser cooling, it is used everywhere in a MOT (in 3D case, of course, one have three pairs of σ+ and σ– waves). In this ...
Soft-x-ray interferometer for single-shot laser linewidth measurements
... grating G1, the x-ray laser beam is diffracted into different orders. By properly choosing the incidence angle and blaze of the grating, one can ensure that most of the incoming energy is split evenly between the zero and the first diffraction orders. As can be readily shown with geometric considera ...
... grating G1, the x-ray laser beam is diffracted into different orders. By properly choosing the incidence angle and blaze of the grating, one can ensure that most of the incoming energy is split evenly between the zero and the first diffraction orders. As can be readily shown with geometric considera ...
A Green Laser Pointer Hazard
... packaging. One of these lasers had a much weaker green light intensity compared to the others, as judged by normal eyesight. We measured the output power of that laser and found that it emitted more than ten times more invisible infrared light than visible green light. This is a serious hazard, sinc ...
... packaging. One of these lasers had a much weaker green light intensity compared to the others, as judged by normal eyesight. We measured the output power of that laser and found that it emitted more than ten times more invisible infrared light than visible green light. This is a serious hazard, sinc ...
The HeNe Laser
... black disk that the mirror is attached to. Gently remove the mirror and place it in the mirror holder. To put a mirror in, just do the opposite as described above. Initial alignment should be done with a mirror with a radius of curvature in the range 40 < R < 65 cm. Referring to Fig. 1.1, now that t ...
... black disk that the mirror is attached to. Gently remove the mirror and place it in the mirror holder. To put a mirror in, just do the opposite as described above. Initial alignment should be done with a mirror with a radius of curvature in the range 40 < R < 65 cm. Referring to Fig. 1.1, now that t ...
Lasers versus LEDs for Bioinstrumentation Laser Advantage #1
... or substantially more complex and costly focusing optics, or both. ...
... or substantially more complex and costly focusing optics, or both. ...
Ali BAZZI - ShareStudies.com
... electron exists in the excited state before a transition occurs is known as the spontaneous lifetime τ21. If the density of atoms within the system with energy E2 is N2, then the spontaneous emission rate is given by the product of N2 and 1/τ2. This may be written as N2 A21 where A21, the Einstein c ...
... electron exists in the excited state before a transition occurs is known as the spontaneous lifetime τ21. If the density of atoms within the system with energy E2 is N2, then the spontaneous emission rate is given by the product of N2 and 1/τ2. This may be written as N2 A21 where A21, the Einstein c ...
Dark solitons in mode-locked lasers Mark J. Ablowitz , Theodoros P. Horikis
... the door to new applications in the fields of optical communications [4] and femtosecond lasers [6]. In the nonmode-locking regime, the first train of dark solitons was successfully achieved in an all normal dispersion Erbiumdoped fiber laser with an in-cavity polarizer. In ML lasers they have been ...
... the door to new applications in the fields of optical communications [4] and femtosecond lasers [6]. In the nonmode-locking regime, the first train of dark solitons was successfully achieved in an all normal dispersion Erbiumdoped fiber laser with an in-cavity polarizer. In ML lasers they have been ...
Laser Cutting
... Laser printing is a multipart process, but only one part of this process involves a laser. First a rotating drum made from an appropriate material, usually selenium or an organic photoconductor, is given a negative charge. A negative charge is created when an atom has more electrons that protons. Th ...
... Laser printing is a multipart process, but only one part of this process involves a laser. First a rotating drum made from an appropriate material, usually selenium or an organic photoconductor, is given a negative charge. A negative charge is created when an atom has more electrons that protons. Th ...
Playing with Light
... energy to excite valence electrons into outer orbitals. For hydrogen (or any atom ionized down to one electron) a simple formula tells which photons will be absorbed or emitted - Rydberg’s formula: E = RH (1/ni2 – 1/nf2) RH is called Rydberg’s constant, and is 2.18 x 10-18 J. This energy can be conv ...
... energy to excite valence electrons into outer orbitals. For hydrogen (or any atom ionized down to one electron) a simple formula tells which photons will be absorbed or emitted - Rydberg’s formula: E = RH (1/ni2 – 1/nf2) RH is called Rydberg’s constant, and is 2.18 x 10-18 J. This energy can be conv ...
High-power passively mode-locked semiconductor lasers
... tapered semiconductor amplifier section [2], and master-oscillator-power-amplifier systems with tapered [3] and inverse bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has be ...
... tapered semiconductor amplifier section [2], and master-oscillator-power-amplifier systems with tapered [3] and inverse bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has be ...
Construction of a femtosecond mode
... There are several methods by which pulsed output can be generated, for example Qswitching and mode-locking [7]. By now the most advanced technique for ultarshort pulse generating is Kerr-lens mode- locking in solid-state lasers. This technique can provide sub-10 fs lasing and does not require very c ...
... There are several methods by which pulsed output can be generated, for example Qswitching and mode-locking [7]. By now the most advanced technique for ultarshort pulse generating is Kerr-lens mode- locking in solid-state lasers. This technique can provide sub-10 fs lasing and does not require very c ...
Laser-Energy Transfer and Enhancement of Plasma Waves and
... the normalized vector potential, and and I were the laser wavelength and focal intensity, respectively. At the peak intensity of laser interference, I 4 1018 W=cm2 , the potential depth of the ponderomotive force valleys was estimated to be about 300 keV. Figure 5(a) shows snapshots of the pum ...
... the normalized vector potential, and and I were the laser wavelength and focal intensity, respectively. At the peak intensity of laser interference, I 4 1018 W=cm2 , the potential depth of the ponderomotive force valleys was estimated to be about 300 keV. Figure 5(a) shows snapshots of the pum ...
Laser Cosmology
... Unfortunately this temperature is extremely low for stellar size and supermassive BHs. Primordial BHs borne out of space-time fluctuations, which are small, might have its Hawking effect detectable. However, this would only happened in the very early universe and therefore unobservable in the presen ...
... Unfortunately this temperature is extremely low for stellar size and supermassive BHs. Primordial BHs borne out of space-time fluctuations, which are small, might have its Hawking effect detectable. However, this would only happened in the very early universe and therefore unobservable in the presen ...
IOSR Journal of Applied Physics (IOSR-JAP)
... The free electrons in the metal (d-electrons in gold) are free to travel through the material [2]. The mean free path in gold is ~50nm; therefore in particles smaller than this, no scattering is expected from the bulk. Thus, all interactions are expected to be with the surface. When the wavelength o ...
... The free electrons in the metal (d-electrons in gold) are free to travel through the material [2]. The mean free path in gold is ~50nm; therefore in particles smaller than this, no scattering is expected from the bulk. Thus, all interactions are expected to be with the surface. When the wavelength o ...
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 ...
White Paper
... temperature by monitoring and feeding back output power and/or temperature. This not only makes it hard to guarantee ideal optical signal quality but also requires additional electrical and optical feedback circuits as well as their testing, leading to high cost and low throughput of optical transce ...
... temperature by monitoring and feeding back output power and/or temperature. This not only makes it hard to guarantee ideal optical signal quality but also requires additional electrical and optical feedback circuits as well as their testing, leading to high cost and low throughput of optical transce ...
Laser pumping
Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms. When the number of particles in one excited state exceeds the number of particles in the ground state or a less-excited state, population inversion is achieved. In this condition, the mechanism of stimulated emission can take place and the medium can act as a laser or an optical amplifier. The pump power must be higher than the lasing threshold of the laser.The pump energy is usually provided in the form of light or electric current, but more exotic sources have been used, such as chemical or nuclear reactions.