Morteza Gharib - San Marino CA,
Dominique Fourguette - Los Angeles CA,
Darius Modarress - Los Angeles CA,
Frederic Taugwalder - Altadena CA,
Siamak Forouhar - Pasadena CA,
California Institute of Technology - Pasadena CA
250574, 356336, 356441, 738655, 73705
Integrated sensors are described using lasers on substrates. In one embodiment, a first sensor forms a laser beam and uses a quartz substrate to sense particle motion by interference of the particles with a diffraction beam caused by a laser beam. A second sensor uses gradings to produce an interference. In another embodiment, an integrated sensor includes a laser element, producing a diverging beam, and a single substrate which includes a first diffractive optical element placed to receive the diverging beam and produce a fringe based thereon, a scattering element which scatters said fringe beam based on particles being detected, and a second diffractive element receiving scattered light.