Analizzatore di spettro per laser CO2

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Wavelength Scale This is a portion of the wavelength scale shown at full size. The upper calibrations are CO₂ rotational line designations and the lower scale is the wavelength in microns. The thermal sensitive screen in the center displays the lasing wavelengths as a dark line. The wide sensitivity range of the spectrum analysis screen can simultaneously display lines which differ in power density by a factor of 20. Each instrument is factory calibrated and should never need adjustment. However, a simple procedure allows the calibration to be checked by the user. During operations, the laser beam is allowed to strike the front of the Spectrum Analyzer so that a portion of the beam passes through a variable slit. Normally the laser beam is intense enough that it is not necessary to focus the light on the slit. The light which does not pass through the slit is absorbed in the matte anodized case. The internal beam monitor is a Thermal Imaging Plate that displays the CO₂ laser beam which has passed through the slit. During the positioning of the instrument this device is engaged. When the monitor indicates the Analyzer to be properly positioned, it is then disengaged to allow the beam to pass onto the display screen.

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