· Optics: Martin Puplett optical configuration with Large 90mm optics and fast f/2.35 condensers for high light throughput.
· Grid polarizer beam splitter for polarizing mode operation (2μm lines with 4μm pitch aluminum on Mylar substrate) Roof mirrors with angle within 3 arc-sec. Off-axis paraboloid condensing optics.
· Body: Vacuum steel housing capable of maintaining 10-3Torr.
· Source: Internal 75W Hg arc lamp (water cooled) with external DC stabilized power supply and ignitor.
· Controls Motorized alignment for roof mirror (tilt, rotary shear, lateral shear) to fine tune interference at the beam splitter.
· Ports Vacuum Purge Port, Thermocouple vacuum gauge with analog dial display, Water Cooling Connections (inlet and outlet ports for water cooling of internal light source and stepper motors)
· Scan: Step and Scan Mode: In this standard scan mode, detector data collection correlates to the translating roof mirror position. The SPS-200 control software sets the mirror position via RS-232 interface, and collects the detector data via GPIB interface and lock-in amplifier.
Rapid Scan Mode: The roof mirror moves continously and does not stop at each reference position for detector data collection. An interferogram is generated immediately after the mirror completes its translation (typically 15~60sec). Due to the high data speed, a 16-bit AD board is required to collect the data from the detector into the computer rather than the much slower GPIB interface.
· Spectral Range: 2~2000cm-1 (5µm~5mm)
· Standard Resolution: 0.119cm-1 with 5cm translation stage
· High Resolution: 0.020cm-1 with 30cm translation stage
· Signal/noise ratio: Michelson mode: 0.4 % MP mode: 2.2 %
· Dimensions: 39”x 25”x15”
· Weight: 180kg (steel body), 80kg (aluminum body)