Strain induced optical waveguides in lithium niobate, lithium tantalate, and barium titanate Demonstration of an x-ray ring-aperture microscope for inertial- confinement fusion experiments Effects of compressive and tensile uniaxial stress on the operation of AIGaAs/GaAs quantum-well lasers Role of substrate temperature in molecular-beam epitaxial growth of high-power GaAs/AIGaAs lasers