DFB Quantum Cascade Laser Arrays The Harvard community has
... Fig. 2. (a) Schematic of the DFB-QCL waveguide structure. The grating is etched in an InGaAs layer (blue) in the top waveguide cladding, just above the active region (red). There is InP overgrown on top of the grating (yellow in diagram). (b) Mode simulation of the mode on the low-frequency side of ...
... Fig. 2. (a) Schematic of the DFB-QCL waveguide structure. The grating is etched in an InGaAs layer (blue) in the top waveguide cladding, just above the active region (red). There is InP overgrown on top of the grating (yellow in diagram). (b) Mode simulation of the mode on the low-frequency side of ...
Concentration effect of carbon nanotube based saturable
... study, we comprehensively investigated the concentration effect of dispersed SWCNTs in polymer films for being a SA to stabilize the mode locking performance of the EDFL pulse through the diagnosis of its nonlinear properties of SA. The SWCNTs SA is inserted in the EDFL ring to analyze correlation o ...
... study, we comprehensively investigated the concentration effect of dispersed SWCNTs in polymer films for being a SA to stabilize the mode locking performance of the EDFL pulse through the diagnosis of its nonlinear properties of SA. The SWCNTs SA is inserted in the EDFL ring to analyze correlation o ...
Fiber optic Fabry-Perot interferometer for
... The fiber Fabry-Perot interferometer (FFPI) sensor works by detecting the phase modulation of a light beam, but its performance depends more on the interrogation scheme that on the structure of the interferometer. Naturally, fiber interferometers are wavelength modulated sensors but they can be also ...
... The fiber Fabry-Perot interferometer (FFPI) sensor works by detecting the phase modulation of a light beam, but its performance depends more on the interrogation scheme that on the structure of the interferometer. Naturally, fiber interferometers are wavelength modulated sensors but they can be also ...
HERE - Washington
... refraction the changing of a wave’s speed and direction as it travels into a medium (SRB, IG) research looking for work that may already have been done (IG) resolution the clarity of detail in an image (SRB, IG) reverberation the collection of closely spaced sound reflections off many surfaces (SRB ...
... refraction the changing of a wave’s speed and direction as it travels into a medium (SRB, IG) research looking for work that may already have been done (IG) resolution the clarity of detail in an image (SRB, IG) reverberation the collection of closely spaced sound reflections off many surfaces (SRB ...
Low-Temperature Bonding for Silicon-Based Micro
... Several methods of low process complicity were developed to improve passive alignment accuracy. In the first method [53], the challenge in the planar alignment due to height differences of the optical components has been addressed. Firstly, the optical source and detector are mounted on a planar sub ...
... Several methods of low process complicity were developed to improve passive alignment accuracy. In the first method [53], the challenge in the planar alignment due to height differences of the optical components has been addressed. Firstly, the optical source and detector are mounted on a planar sub ...
Thesis - Archive ouverte UNIGE
... [6, 7]. It is however emitted at random time which makes it unsuitable for some applications. This heralded photon could be stored in a QM and released when needed, thus realizing an on-demand source of single photons[8]. Our main interest, though, is the implementation of quantum memories in quantu ...
... [6, 7]. It is however emitted at random time which makes it unsuitable for some applications. This heralded photon could be stored in a QM and released when needed, thus realizing an on-demand source of single photons[8]. Our main interest, though, is the implementation of quantum memories in quantu ...
Fabrication of concave silicon micro-mirrors
... cylindrical structures with the same parameters A, C and D as in Fig. 1 and the cylindrical structures have the same cross sectional profiles. The only difference is that instead of irradiating annular patterns, lines are irradiated instead (Fig. 1f). Concave mirrors and cylinders with two different ...
... cylindrical structures with the same parameters A, C and D as in Fig. 1 and the cylindrical structures have the same cross sectional profiles. The only difference is that instead of irradiating annular patterns, lines are irradiated instead (Fig. 1f). Concave mirrors and cylinders with two different ...
Cosmic Evolution of Black Holes and Spheroids. I: The M_BH
... Cosmic evolution of the MBH − σ relation better quality Keck data (S/N up to 100Å−1 as opposed to ∼ 50 Å−1 of the pilot study and thus smaller uncertainty on the velocity dispersion; ii) higher completeness to limit possible selection effect (14/20 velocity dispersions measured as opposed to 7/13 ...
... Cosmic evolution of the MBH − σ relation better quality Keck data (S/N up to 100Å−1 as opposed to ∼ 50 Å−1 of the pilot study and thus smaller uncertainty on the velocity dispersion; ii) higher completeness to limit possible selection effect (14/20 velocity dispersions measured as opposed to 7/13 ...
Optical properties scattering - IMT
... To understand scattering in a given situation, we compute phase delays Because the phase is constant along a wave-front, we compute the phase delay from one wave-front to another potential wave-front. If the phase delay for all scattered waves is the same, then the scattering is constructive and coh ...
... To understand scattering in a given situation, we compute phase delays Because the phase is constant along a wave-front, we compute the phase delay from one wave-front to another potential wave-front. If the phase delay for all scattered waves is the same, then the scattering is constructive and coh ...
RADIO RELICS AND MAGNETIC FIELDS IN GALAXY CLUSTERS
... Appendix A we also discuss the limitations of our method. - In the Conclusions an overview of this Thesis is presented. We highlight the main results and give some prospects for future studies on magnetic field in GCs. ...
... Appendix A we also discuss the limitations of our method. - In the Conclusions an overview of this Thesis is presented. We highlight the main results and give some prospects for future studies on magnetic field in GCs. ...
Theoretical and empirical comparison of coupling coefficient and
... 4 to 15μm [7]. It also shows a strong decrease when the fiber core spacing increases, as expected from Equation (5) by assuming that the interaction length is negligible as compared to the radius of the curvature of the fibers and the wavelength. On the other hand, δ decays smoothly at lower d rathe ...
... 4 to 15μm [7]. It also shows a strong decrease when the fiber core spacing increases, as expected from Equation (5) by assuming that the interaction length is negligible as compared to the radius of the curvature of the fibers and the wavelength. On the other hand, δ decays smoothly at lower d rathe ...
Optical interference component irradiances."
... We need to insert “compensator plate” C in arm OM1. Exact Duplicate of BS without the silver coating. Therefore, the difference in OPL is actual path length difference. 4) An additional phase term is present in the OM2 arm, due to an internal reflection in the BS, whereas the OM1 wave has an externa ...
... We need to insert “compensator plate” C in arm OM1. Exact Duplicate of BS without the silver coating. Therefore, the difference in OPL is actual path length difference. 4) An additional phase term is present in the OM2 arm, due to an internal reflection in the BS, whereas the OM1 wave has an externa ...
Fatimah Final Thesis
... chalcogen–chalcogen bonds, has concentrated mostly on sulfur due to its ability to catenate and to bind to several metal centers. Similar bonding modes have been observed also for Se and Te after the mid-1970s.4,5 The properties of metal–sulfur structures have been studied extensively in chemistry. ...
... chalcogen–chalcogen bonds, has concentrated mostly on sulfur due to its ability to catenate and to bind to several metal centers. Similar bonding modes have been observed also for Se and Te after the mid-1970s.4,5 The properties of metal–sulfur structures have been studied extensively in chemistry. ...
Infrared Solar Physics - National Optical Astronomy Observatory
... and many of those observations have produced breakthrough science. But one thing is certain: the Sun is still stubbornly keeping secrets from us. The goal of this review is to clearly show how we can attack those outstanding questions in solar physics by looking through the window provided by the in ...
... and many of those observations have produced breakthrough science. But one thing is certain: the Sun is still stubbornly keeping secrets from us. The goal of this review is to clearly show how we can attack those outstanding questions in solar physics by looking through the window provided by the in ...
aa f - Freie Universität Berlin
... scientific writing. Contents and form must be such that the interested reader is introduced to the topic and the questions to be answered in an efficient and concise way and is able to follow and understand the work and conclusions. This aspect must be kept in mind and it should not be limited to a ...
... scientific writing. Contents and form must be such that the interested reader is introduced to the topic and the questions to be answered in an efficient and concise way and is able to follow and understand the work and conclusions. This aspect must be kept in mind and it should not be limited to a ...