# Browse by Subject "Physics, Optics"

• (1994)
In light of the substantial performance advantages of quantum well lasers relative to double heterostructure lasers, extensive efforts have been directed toward producing quantum wire (QWR) systems. Theory predicts that ...

application/pdf

PDF (4Mb)
• (1990)
The application of electroabsorption in an AlGaAs quantum-well semiconductor laser device for optically based electromagnetic field sensing has been studied. A separate confinement heterostructure laser design containing ...

application/pdf

PDF (4Mb)
• (1989)
Impurity induced layer disorder-delineated buried channel optical waveguide non-rectilinear routing structures are found to have loss properties equal to or better than other planar optical waveguides. With 3 dB loss angles ...

application/pdf

PDF (3Mb)
• (1995)
Methods for controlling and detecting complex optical fields with high spatial and temporal bandwidths are considered in this thesis. Space-time transformations can be used to encode and detect information in optical fields. ...

application/pdf

PDF (5Mb)
• (1981)
Lasing has been observed at five different wavelengths ranging from 472 to 497 nm from discharge pumped iodine monofluoride (IF). At the optimum output coupling 4 mJ was measured in a 30 ns FWHM pulse with a peak power of ...

application/pdf

PDF (2Mb)
• (1989)
This thesis describes the results from high pressure experiments on semiconductors, and some theoretical background for those experiments. The primary goal is to better understand the properties of these useful materials ...

application/pdf

PDF (4Mb)
• (1994)
This thesis describes the use of optical absorption and photoluminescence spectroscopy in understanding the spatial transport and energy relaxation of excitons in quantum well systems. I discuss the mechanism of carrier-induced ...

application/pdf

PDF (6Mb)
• (1992)
The overtone performance of the UIUC supersonic cw HF chemical laser was characterized as a function of flow rates, cavity pressure, mode volume, mirror reflectivity and method of He injection. The overtone performance was ...

application/pdf

PDF (10Mb)
• (1971)

application/pdf

PDF (3Mb)
• (1993)
Femtosecond laser pump-probe experiments have been applied to the study of vibrational wavepacket dynamics in the excited states of the cesium dimer, Cs$\sb2.$ The real-time vibrational motion of the molecule is observed ...

application/pdf

PDF (4Mb)
• (1989)
Semiconductor injection lasers have the capability of producing very high output powers if a large array of diodes can be fabricated. The development of useful high power semiconductor lasers depends on fabrication processes ...

application/pdf

PDF (4Mb)
• (1990)
We have used light scattering techniques to probe the vibrational properties of GaAs/AlAs superlattices and the dynamics of electrons in GaAs/Al$\sb{\rm x}$Ga$\sb{\rm 1-x}$As multiple quantum well structures.

application/pdf

PDF (5Mb)
• (1996)
The design of high-performance, low-cost optical interconnects requires flexible, reliable, and computationally efficient computer-aided design tools. Optimizing component parameter specifications to achieve high manufacturing ...

application/pdf

PDF (6Mb)
• (1994)
The determination of the optical properties of turbid biological media is of primary importance in several areas of medicine and biotechnology. In particular, the quantitative determination and spatial localization of the ...

application/pdf

PDF (4Mb)
• (1991)
The development of visible-spectrum semiconductor lasers is of immense economic and practical importance. Because of the extremely high efficiency of semiconductor lasers, coherent visible light sources can be made with ...

application/pdf

PDF (3Mb)
• (1995)
Two types of integrable semiconductor lasers are investigated in this thesis. Semiconductor ring lasers with circular and square ring resonators are analyzed, and their fabrications and laser results are described. ...

application/pdf

PDF (4Mb)
• (1991)
Reflector antenna design is a mature field and most aspects of it have been studied. However, most previous work is distinguished by the fact that it is narrow in scope, analyzing only a particular problem under certain ...

application/pdf

PDF (3Mb)
• (1970)

application/pdf

PDF (2Mb)
• (1993)
Light scattering techniques have proven to be valuable tools in determining the size and optical properties of aerosol particles. Laser light scattering techniques can be used unobtrusively in harsh environments, so the ...

application/pdf

PDF (6Mb)
• (1991)
Lidar measurements of mesospheric Fe were conducted at Urbana, Illinois, during four nights in late October 1989. The average Fe abundances, layer centroid heights and rms widths varied between 1.0-2.0 $\times$ 10$\sp{10}$ ...

application/pdf

PDF (6Mb)