Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL)

Use of Equivalent Hermitian Hamiltonian for $PT$-Symmetric Sinusoidal Optical Lattices

Use of extended and prepared reference objects in experimental Fourier transform X-ray holography

Use of fiber optics in an astrometrical instrument

Use of glass ceramic as a structural material for a high-precision space telescope

Use of Kumakhov optics for x-ray element analysis

Use of MEMs for active and adaptive optics

Use of minimum-energy modes for modal-active optics corrections of thin meniscus mirrors.

Use of monochromators during AXAF calibration

Use of nondispersion correlation spectroscopy for remote sensing of CO in combustion gases

Use of optical fibers in spectrophotometry

Use of Raman spectroscopy in the characterization of soft x-ray multilayer reflectors

Use of silicon pore optics for a SF class deployed telescope

Use of Slow Light to test the Isotropy of Space

Use of subwavelength gratings in TIR incidence as achromatic phase shifters

Use of the LIGA process for the production of pyramid wavefront sensors for adaptive optics in astronomy

Use of the perturbation technique in the statistical estimation theory for analyzing the Doppler sounding problem

Use of two deformable mirrors AO system for an interferometric testbed

Use of wavefront-sensor measurements to reconstruct images in partially compensated imaging systems with finite bandwidth

Use of x-ray optical systems in a small diffractometer