QTH lamps of 45 W, 200 W, and 1000 W input power are available as standalone lamps or complete light source kits for turnkey operation.  The 45 W QTH lamp option outputs light from 300 to 2400 nm. The 200 W and 1000 W QTH lamp options output light from 250 to 2500 nm. A lamp should be chosen based on the wavelength and irradiance requirements of the application or system. Output irradiance of the lamp must be intense enough to produce a good signal to noise ratio without saturating a photodetector or other components in the system.

The appropriate rod mount is included with each QTH light source kit. Rod mounts are open-air holders that provide a low cost alternative to lamp housings. Additional benefits when using a rod mount include the ability to place the lamp closer to the sample or desired area of illumination and the option of mounting the lamp horizontally or vertically. Users that need to collimate and focus the light output of the QTH lamp can select the appropriate lens setup from Newport's line of lenses.