Ograniczanie wyników
Czasopisma help
Lata help
Autorzy help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 48
first rewind previous Strona / 3 next fast forward last
Wyszukiwano:
w słowach kluczowych:  semiconductor laser
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Scientific Bulletin. Physics / Technical University of Łódź
1998 Vol. 18 51-58
PL W niniejszej pracy przedstawiono ostatnie wyniki komputerowych symulacji dwuwymiarowych matryc powierzchniowych laserów złączowych z poprzecznym rezonatorem typu VCSEL, poprzecznych modów promieniowania laserów VCSEL ze wzmocnieniowym efektem falowodowym w płaszczyźnie złącza p-n, jak również azotko[...]
EN In the present paper, recent results of computer simulations of two-dimensional arrays of vertical-cavity surface-emitting lasers (VCSELs), transverse modes in gain-guided VCSELs as well as double-heterostructure and quantum-well nitride VCSELs are presented. As expected, the simulations enable us t[...]
2
100%
Opto - Electronics Review
EN We present high power surface-emitting single mode GaAs-based quantum cascade lasers (QCLs) in the mid-infrared. By using an air-AlGaAs waveguide combined with second-order distributed feedback processing, we obtained optical output via the surface above 3 W. Surface-normal dual-lobe light emission [...]
3
80%
Reports on Geodesy
2011 z. 1/90 165-172
EN A huge progress in the laser technology, in particular the creation of the semiconductor laser, allows to see the method of laser plumbing as a method of the future which can replace mechanical plumbing. Therefore, the issues connected with the method of plumbing become more and more popular. The m[...]
4
80%
Przegląd Elektrotechniczny
2015 R. 91, nr 9 147-149
PL W artykule przedstawiono sprzężone zjawiska fizyczne, tj. wzajemnie powiązane procesy optyczne, elektryczne i cieplne, a niekiedy również mechaniczne, decydujące o działaniu laserów półprzewodnikowych różnych typów. Szczególnie dokładnie opisano struktury i własności półprzewodnikowych laserów o emi[...]
EN The paper presents coupled physical phenomena, i.e. interrelated optical, electrical, thermal and sometimes also mechanical processes crucial for an operation of various types of semiconductor lasers. Structures and properties of edge-emitting semiconductor lasers (EELs) are described scrupulously, [...]
5
80%
Computer Applications in Electrical Engineering
2014 Vol. 12 541--550
EN This article describes the stage of work associated with the implementation of a program- controlled measuring stand for recording the acoustic signals. An attempt has been made for practical implementation of the stand that uses light from a semiconductor laser, modulated by acoustic wave to obtain[...]
6
80%
Optica Applicata
EN Comprehensive three-dimensional self-consistent optical-electrical-thermal-gain physical modelling is used to simulate room-temperature continuous-wave performance characteristics of GalnAs/GaAs lasers emitting in the 1.3žm wavelength range. The simulation takes into consideration all physical pheno[...]
7
80%
Optica Applicata
EN In this paper we describe a number of optical techniques suitable for estimation of the semiconductor surface temperature. High spatially resolved thermoreflectance will be shown as a powerful tool to measure temperature distribution at the laser diode front facet. For determination of the absolute [...]
8
80%
Optica Applicata
EN In the present paper, an impact of localization of an oxide aperture within a vertical-cavity surface-emitting diode laser (VCSEL) on its threshold operation is analyzed. As expected, a shift of the aperture from the anti-node position of the standing optical wave within a VCSEL cavity to the node p[...]
9
80%
Optica Applicata
EN In the high power semiconductor lasers, the surface of the mirror is the key element of the construction, which has the main impact on the reliability and degradation processes. In the case of lasers fabricated with the use of GaAs compounds the highest power emitted by the structure is limited by t[...]
10
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
11
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
12
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
13
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
14
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
15
80%
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
16
80%
Materiały Elektroniczne
PL Przedstawiono wyniki prac nad modyfikacjami charakterystyk promieniowania laserów półprzewodnikowych poprzez wprowadzenie naprężeń w procesie technologicznym. Praca przedstawia skrótowo wybrane metody opisu naprężeń, wynikające z nich teoretycznie przewidywane własności heterostruktur naprężonych i [...]
EN Mechanical strain introduced into an active region is now widely used solution in semiconductor laser design. By strain-induced changes of valence band structure, bandgap width and active region material constants one can influence (at a design stage) laser radiation characteristics such as polarisa[...]
17
80%
Opto - Electronics Review
EN The emitted beam far field (FF) distributions of phase-locked semiconductor laser arrays (PLA) made them an interesting candidate for high-brightness light sources. Variations of geometrical parameters of PLA have great influence on their far-field characteristics. This paper presents a review of FF[...]
18
80%
Opto - Electronics Review
EN The problem of turn-on delay induced by the subthreshold bias of the semiconductor laser in the burst-mode fiber optic transmitters is discussed. An easy to use method of estimation of the turn-on delay is proposed and experimentally verified. The Simulink model of the laser is proposed, allowing to[...]
19
70%
Optica Applicata
2011 Vol. 41, nr 2 323--331
EN An experimental investigation was made on use of radio frequency (RF) modulation of a semiconductor laser in order to improve the noise performance of the scanning probe micros-copy cantilever position sensitive detector. High resolution measurements of the cantilever displacement are limited by opt[...]
20
70%
Optica Applicata
EN The efficiency of coupling between semiconductor lasers and single-mode optical fibers can be greatly increased by a microlens of an appropriate focal length being fabricated at the end of the fiber. The reason for this is that the lens can effectively improve the mode matching of the laser and fibe[...]
first rewind previous Strona / 3 next fast forward last