Key Benefits
- Compact Size
- Inexpensive
- Operates in Analog or Photon Counting Modes
- Detection from 185 to 900 nm
- Complete Package
- LCD display of output signal
- Easy to Use
PMT's are better than photodiodes and APD's for low light detection
Although the quantum efficiency (QE) of a PMT is less than that of a silicon photodiode or avalanche photodiode (APD), a PMT has a much lower limit of low light detection due to the high current amplification (~ 107) of the electron multiplier in the PMT. It is because of this large gain and low noise that a PMT provides significantly better low light sensitivity than a photodiode or APD.
Looking for NIR Detection?
For NIR detection beyond 900 nm please take a look at our CoolOne cooled PMT housing for photomultiplier detection from 185 to 1,200 nm and also our InGaAs detectors for detection from 0.8 to 1.9 μm.
The HORIBA ambient PMT housing includes the following
- On/off switch
- Complete analog and photon counting circuitry
- Analog or photon counting mode/output switch
- Line voltage power supply
- High voltage power supply
- LCD display of PMT high voltage or measured analog signal
- Signal out BNC connection
- High voltage adjustment knob
- External high voltage control input BNC connection (for optional external control)
- RF shielded case
- Internal socket for most 1 1/8-inch side-on photomultiplier tubes
HORIBA's photomultiplier detection system is very convenient and easy to use. It is built as a complete unit using modern design techniques and components. Everything needed to quantitate the intensity of light is packaged into a compact, attractive housing that attaches conveniently to your experiment. There are no unsightly boxes for power supplies or a multitude of cables tangled on your bench-top. The system incorporates a high voltage supply, all detector electronics, and the controls in a compact, attractive housing that also contains the PMT. You have a choice of standard PMTs to choose from or you can select from any other 1 1/8-inch side-on photomultiplier tubes that operate from -200 to -1,100 Volts DC. The PMT high voltage is shown on a digital display on the housing or you can select to show the actual analog signal from the PMT with just a flip of a switch. The high voltage can be adjusting manually or controlled externally with a signal at the “External Voltage Control” BNC. Power is delivered from an external AC adapter that is included.