Abstract:
Normally, repeated calibration measurements are necessary for the adjustment of the sample and ellipsometer. To achieve an automatic relative adjustment, a sample position detection system that can be adjusted in relation to the ellipsometer and locked in is assigned to the ellipsometer, and where the detection system is connected to an adjusting system that affects the sample table and/or the entire system detection system/ellipsometer. The method for automatic relative adjustment is provided for, that by initially using one sample, the system sample/ellipsometer is adjusted via the symmetry of the detector signal of the ellipsometer, and that the sample position detection system is adjusted and subsequently locked in with the ellipsometer. With all subsequent samples, a relative adjustment of sample and ellipsometer detection system is performed using the signals of the detection system. In particular, the measurements can be performed without moving the sample itself because the adjustment can also be carried out through a single movement of the ellipsometer detection system.
Abstract:
A micropolarimeter comprises an analyzer (1) and a detector (3), which is typically a photodetector array. The detector has a circular configuration of a number N of sectors. Analyzer (1) and detector (3) form a unit with the analyzer assigning different polarization values to the sectors. Analyzer and the detector contain no moving parts. Three different embodiments are proposed for the analyzer: a glass cone, covered with a polarizing thin film stack, a metal grid polarizing array, and an array of polarizing waveguides. The micropolarimeter (14) is used preferably in a microellipsometer system which can serve as a tool for film diagnostics, especially optical characterization of thin films.
Abstract:
A ship of the 50 ton class includes a deep-V hull shape which is a partially monohedron fully planing hull with a hand chine and two bottom risers, a water jet propulsion system cooperating with a motor, and control apparatus for controlling the motor and propulsion system. Preferably, the motor is a 16 cylinder marine diesel engine having a maximum speed of between about 1800 and 2100 rpm and a maximum power of about 1900 kW, while the water jet is a high speed, high rpm water jet having a maximum water jet speed of between about 1400 and 1600 rpm, the water jet coupled to the motor by means of a reduction gear between about 1:1.15 and 1:1.