Optical Properties of Semiconductors

Radiation Emitted from Semiconductor Lasers in Strong Magnetic Fields and under High Hydrostatic Pressures.- I Influence of Magnetic Fields and High Pressures on Energy Spectra of Semiconductors.- 1. Influence of Magnetic Fields on Energy Structure of IIIV and IVVI Semiconductor Compounds.- 2. Influence of Pressure on Energy Structures of IIIV and IVVI Compounds.- 3. Characteristics of Semiconductor Laser Operation Affected by Variation of Temperature, Pressure, and Magnetic Field.- II Experimental Method.- 1. Apparatus for Excitation of Injection Lasers and Recording of Emission Spectra.- 2. Q-Switched CO2 Laser.- 3. Technique Used in Low-Tempe rature Magnetooptic Investigations at Infrared Wavelengths.- 4. Apparatus Used in Optical Measurements at Infrared Wavelengths under High Hydrostatic Pressures at 77K.- 5. Zinc- and Copper-Doped Germanium Infrared-Radiation Detectors.- 6. Scanning of Infrared Radiation Emitted from InSb Crystals.- 7. Other Measurements.- III Influence of Magnetic Fields on Emission Spectra of p-n Junctions in InAs, InSb, and PbSe.- 1. Spontaneous and Coherent Radiation Emitted from InAs Injection Lasers.- 2. Radiation Emitted from InSb Injection Lasers in Strong Magnetic Fields. Position of Light-Emission Region.- 3. Spontaneous and Coherent Radiation Emitted from p-n Junctions in PbSe,.- IV Magnetically Tuned Stimulated Raman Emission from Indium Antimonide.- 1. Raman Scattering of Light by Plasmons and Landau Levels in Semiconductors.- 2. Stimulated Raman Scattering of Light Accompanied by Spin Flip in Indium Antimonide.- 3. Discussion of Results.- V Influence of Pressure on Radiation Emitted from Lead Selenide and Gallium Arsenide Semiconductor Lasers.- 1. Emission Spectra of PbSe Lasers.- 2. Emission Spectra of GaAs Lasers.- 3. Discussion of Results.- Conclusions.- Literature Cited.- Investigation of the Collective Properties of Excitons in Germanium by Long-Wavelength Infrared Spectroscopy Methods.- I Energy Spectra and Collective Properties of Excitons in Semiconductors.- 1. Energy Spectrum of Excitons.- 1. Theoretical Calculations.- 2. Experimental Results.- 2. Collective Properties of Exciton Systems.- 1. Theoretical Representations.- 2. Discussion of Experimental Results.- II Methods used in Far-Infrared Investigations of Excitons in Semiconductors.- 1. Spectroscopic Measurements.- 2. Apparatus Used in Low-Tempe rature Optical Measurements under Interband Excitation Conditions.- 3. Sources of Exciting Radiation.- 4. Thermal Conditions.- III Far-Infrared Resonance Absorption in Condensed Exciton Phase in Germanium.- 1. Absorption Spectra of Intrinsic Germanium.- 2. Discussion of Parameters of Electron Hole Drops (n0 and ?).- 3. Temperature Dependence of Resonance Absorption.- 4. Dependence of Resonance Absorption on Excitation Rate.- 5. Resonance Absorption in Doped Germanium.- IV Resonance Luminescence of Condensed Exciton Phase in Germanium.- 1. Experimental Investigation of Resonance Luminescence.- 2. Discussion of Experimental Results. Effective Luminescence Temperature of Drops.- 3. Influence of Inhomogeneous Deformation on Resonance Absorption and Luminescence. Mobility of Electron-Hole Drops.- V Photoionization and Excitation of Free Excitons in Germanium by Submillimeter Radiation.- 1. Photoionization and Excitation Spectra.- 2. Discussion of Experimental Results. Energy Levels of Excitons.- Literature Cited.- Collective Interactions of Excitons and Nonequilibrium Carriers in Gallium Arsenide and Silicon.- I Collective Interactions of Excitons in Semiconductors.- II Measurement Method.- 1. Optical System and Method of Recording Luminescence during Continuous Optical Excitation.- 2. Optical System and Method of Recording Luminescence Due to High-Power Light Pulses.- 3. Temperature Measurement Method.- 4. Determination of Temperature Rise in a Semiconductor during Continuous Optical Excitation.- 5. Determination of Temperature Rise in a