report - CREATE project
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
Diode Laser Characteristics
... index of refraction than its surroundings, so light is confined to the channel by total internal refection. The cleaved facets at the end of the chip serve as the cavity mirrors and output couplers. These can be coated to increase or decrease the facet reflectivity. By careful construction of the diod ...
... index of refraction than its surroundings, so light is confined to the channel by total internal refection. The cleaved facets at the end of the chip serve as the cavity mirrors and output couplers. These can be coated to increase or decrease the facet reflectivity. By careful construction of the diod ...
Synopses by Kim Larsen
... of system quantities, and the third term, as described in Equation 1, can be used to determine the benefits and drawbacks of window material choices, at least in a first order approximation. As expected, the approximate time to beam degradation increases with lower absorption and lower distortion se ...
... of system quantities, and the third term, as described in Equation 1, can be used to determine the benefits and drawbacks of window material choices, at least in a first order approximation. As expected, the approximate time to beam degradation increases with lower absorption and lower distortion se ...
High-Repetition TDS System
... optical pulse with the two-photon absorption type autocorrelator and a spectrum analyzer. Figure 5 shows the autocorrelation trace and spectrum of the seed pulse light on the SMF output terminal. The frequency of the modulation signal input to the MZM was 10 GHz. As indicated in Fig. 3 (b), we obtai ...
... optical pulse with the two-photon absorption type autocorrelator and a spectrum analyzer. Figure 5 shows the autocorrelation trace and spectrum of the seed pulse light on the SMF output terminal. The frequency of the modulation signal input to the MZM was 10 GHz. As indicated in Fig. 3 (b), we obtai ...
AR4000
... slightly. Analog temperature and ambient light outputs allow these effects to be compensated for in software, but typically they are not significant unless the sensor is used in an environment where they vary widely. Finally, the period of the range signal (laser modulation period) is not exactly pr ...
... slightly. Analog temperature and ambient light outputs allow these effects to be compensated for in software, but typically they are not significant unless the sensor is used in an environment where they vary widely. Finally, the period of the range signal (laser modulation period) is not exactly pr ...
Optical Fiber Communication
... On the basis of number of modes:on the basis of number of modes of propagation the optical fiber are classified into two types: (i) Single mode fiber (SMF) and (ii) Multi-mode fiber (MMF) • Single-mode fibers – in single mode fiber only one mode can propagate through the fiber. This type of fiber h ...
... On the basis of number of modes:on the basis of number of modes of propagation the optical fiber are classified into two types: (i) Single mode fiber (SMF) and (ii) Multi-mode fiber (MMF) • Single-mode fibers – in single mode fiber only one mode can propagate through the fiber. This type of fiber h ...
Difficulties associated with working with UV and IR optics
... Reflective coatings are limited to wavelengths greater than 0.15 microns if they are to be broadband, though narrow bandwidth filters can be designed for lower wavelengths [1]. One of the difficulties associated with coating UV optics is that coatings are applied at high temperatures, so stress is i ...
... Reflective coatings are limited to wavelengths greater than 0.15 microns if they are to be broadband, though narrow bandwidth filters can be designed for lower wavelengths [1]. One of the difficulties associated with coating UV optics is that coatings are applied at high temperatures, so stress is i ...
Free Electron Lasers
... G. Lambert et al. Nature Physics (09 Mar 2008), doi: 10.1038/nphys889 http://www.sparx.it/ ...
... G. Lambert et al. Nature Physics (09 Mar 2008), doi: 10.1038/nphys889 http://www.sparx.it/ ...
M. Tech in Optoelectronics and Laser Technology
... Physics and Technology of Optical Fiber Passive photonic components: FO cables, Splices, Connectors, Couplers, Optical fiber, Isolator, Circulator and Attenuator, switches. Fabrication of optical fibers: MOCVD, OVD, VAD, PCVD; measurement of RI, attenuation. Etc. Fiber devices, fiber Bragg gratings, ...
... Physics and Technology of Optical Fiber Passive photonic components: FO cables, Splices, Connectors, Couplers, Optical fiber, Isolator, Circulator and Attenuator, switches. Fabrication of optical fibers: MOCVD, OVD, VAD, PCVD; measurement of RI, attenuation. Etc. Fiber devices, fiber Bragg gratings, ...
Optical amplifier
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.There are several different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. In doped fibre amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light. In semiconductor optical amplifiers (SOAs), electron-hole recombination occurs. In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons. Parametric amplifiers use parametric amplification.