A novel heterodyne Doppler interferometer method for compensating motion artifacts caused by cardiac motion in intracoronary optical frequency domain imaging (OFDI) is demonstrated. To track the relative motion of a catheter with regard to the vessel, a motion tracking system is incorporated with a standard OFDI system by using wavelength division multiplexing (WDM) techniques. Without affectin...

Sensitivity of surface plasmon resonance phase-interrogation biosensor is demonstrated to be enhanced by oblique deposited silver nanorods. Silver nanorods are thermally deposited on silver nanothin film by oblique angle deposition (OAD). The length of the nanorods can be tuned by controlling the deposition parameters of thermal deposition. By measuring the phase difference between the p and s ...

We analyze both experimentally and theoretically the phase shift of a fixed coupling laser field in a L-type system induced by a tunable probe laser field. The measurements are performed with a heterodyne interferometer on a beam of cesium atoms in the D2 line. This system exhibits electromagnetically induced transparency with a rapidly varying refractive index. The parametric dispersion of the...

In this study, we developed an automated, multipoint primary accelerometer calibration system using a two-axis positioning stage and heterodyne laser interferometer. The proposed offers low-cost, convenient, automated calibration, enabling less lead time. also better repeatability of 1μm, which is impossible through manual alignments. We measured the surface deformation reflection adaptor for s...

We develop a new type of high-speed wavefront determination method with single feedback measurement to focus light through 15.2 scattering mean free path in ∼113 ms. Our is based on heterodyne-detection phase sensitivity interferometer. First, the matrix which describes propagation process sample measured by input and output optical fields’ analysis. Then, using spatial modulator reshape incide...