Two-wavelength phase control system

Ultra fast fourier transform spectrometer with rotating scanning

Ultramicroscopic spectrometer

Ultrasonic sensor using short coherence length optical source, a

Universal spectrometer system having modular sampling chamber

Use of light scattering particles in design, manufacture,...

Utilization of a modulated laser beam in heterodyne interferomet

Vacuum line particle detector with slab laser

Vacuum particle detector

Variable chirp optical modulator using single modulation source

Velocity servo for continuous scan Fourier interference spectrom

Versatile and efficient radiation transmission apparatus and met

Vibrating optical fiber accelerometer and gyroscope

Vibration compensating interferometer mirror drive system

Visibility measuring device

Visibility meter and components used therein

Wavelength independent optical probe

Wavelength meter having elliptical wedge

Wavelength scanning interferometry and interferometer employing

Wavelength stabilizing light source apparatus by maintaining a c