Optogalvanic – Laser Calibration Lamps    –   See Through Hollow Cathode Lamp. Spectrolamps offer Optogalvanic (see-through) hollow cathode lamps. They provide a sensitive optogalvanic effect when used with laser beam directed through the cathode discharge. The see through design also acts as a frequency stable reference for high intensity tuneable monochromatic light source, particularly lasers. … Continue reading Optogalvanic Lamps (See Through Hollow Cathode Lamp)