Dr. Shigeo (Ray) Kubota

Research fields:

color science, optical memory, nonlinear optics, semiconductor inspection tool, laser display

Recent research results:

1) Very low luminance standard light source to calibrate the highest sensitivity. spectrophotometers to be used for display contrast measurement, achieved in the original double integrating sphere systems; NEP on his monitor photometer measured 1fW=10-6 cd/m2 currently.

2) Dark field microscope to detect the Mie and Rayleigh scattering of particles down to 50nm.

3) Speckle contrast measurement system for laser display applications, original speckle reduction device using Helmholtz tuning forks.   Spatial coherence measurement of the scanning laser beam to be published soon.

Oxide Corporation

Speckle contrast Measurement System