Phosphor type selection guide for Infrared and UV Sensors
|PEAK EMISSION WAVELENGTH nm / color||WAVELENGTH RANGE (microns)||APPROX. MIN INTENSITY (Dark)||APPROX. MIN INTENSITY (ROOM-LIGHT)||PUMP WAVELENGTH||RESOLUTION (TYPICAL)|
|Q-11||625 / orange||0.7 – 1.4||12µW/cm2||500µW/cm2||visible….UV||3 Lp/mm|
|Q-16||485 / blue-green||0.7 – 1.4||10µW/cm2||500µW/cm2||visible…UV||3 Lp/mm|
|Q-32||650 / red||0.8 – 1.7||8µW/cm2||500µW/cm2||visible…UV||3 Lp/mm|
|Q-42||640 / deep orange||0.7 – 1.6||3µW/cm2||100µW/cm2||visible…UV||3 Lp/mm|
|L-IR||550 / green||0.9-1.1||few mW||few mW||Not Required||3 Lp/mm|
|U-21||deep orange||0.19-0.4||varies||varies||Not Required||3 Lp/mm|
Our Q-11 and Q-32 phosphors are equivalent to the materials which KODAK manufactured in the past. Lumitek® can match that old Kodak part number to one of our products and you can be up and running in no time. See our Kodak part equivalent page for more information.
First from Phosphor Specifications table and Phosphor Sensitivity curves select the wavelength range. For instance if you are working with fiber optic communication range (1350… 1550 nm) the best selection is the Q32 type. For YAG lasers, or around 1000 nm range the L-IR material is the ideal selection, although this requires somewhat higher power (it has a power threshold), and the IR sensitivity has a narrower range, but this does not require charging prior exposure (it has a direct up-conversion property). Note the Q type phosphors requires charging by ambient light prior usage. Exposing the Q materials to IR the charge gradually depletes, so you have to move the card to find an unexposed area to see better the IR beam image, or you need to charge it again.
If you prefer other then orange- reddish emission from the exposed material you can select the Q-16 or L-IR type. (Be aware that the L-IR type has higher power requirement and narrower sensitivity bandwidth.)