PMTSS
Chapter 3: Description
Rev B, August 9, 2016
Page 3
Chapter 3
Description
Thorlabs’ PMT (Photomultiplier Tube) modules are designed for easy integration of PMT detection into imaging
systems and are ideal for laser scanning microscopy. These side-on PMTs have a broadband spectral response
(185
– 900 nm), gain > 10
7
, and a fast response time (1.4 ns). The modules use a Cockcroft-Walton circuit with low
power consumption. A BNC connector supplies the output data from the detectors. The PMTSS series consist of
PMTSS (Stand-Alone PMT), PMTSS2 (Two-Channel PMT), and PMTSS2-SCM (Single-Channel Add-on PMT).
The PMTSS2 module consists of two multi-alkali standard sensitivity PMTs, a DFM dichroic filter cube insert, and
a base. The filter insert enables easy exchange of dichroic mirror/emission filter sets. This configuration enables
dual-
channel detection of signals at two different wavelengths. The input port of the filter block features SM1 (1.035”-
40) threading, which is directly compatible with a wide array of Thorlabs’ SM1 Lens tubes and fiber collimation
adapters. The module has an SMA fiber connector for attaching an SMA-terminated multimode fiber patch cable.
The base of the module is equipped with 1/4" (M6) slots for attachment to an imperial or metric optical table or
breadboard. Due to the weight of the unit, we recommend placing it on a table or breadboard. Add on the PMTSS2-
SCM module to the PMTSS2 module to increase the number of detection channels. The two-channel PMTSS2
modules are expandable to up to eight detection channels.
The PMTSS is a stand-alone photosensor module in a compact aluminum housing. It is a multi-alkali PMT detector
without any filter block and base. It has a C-mount internal thread.
For compatibility with Thorlabs’ SM1 lens tubes,
convert the C-mount thread to external SM1 threads using Thorlabs
’ SM1A9 C-mount to SM1 adapter. For
compatibility with a 30 mm cage system, attach an SM1T2 externally SM1-threaded coupler to the SM1A9, which
is compatible with any of our SM1-threaded 30 mm cage plates.
3.1.
Front Panel Overview
Detector Element
Internal C-Mount Thread
(1.00-32-2A)
Summary of Contents for PMTSS
Page 1: ...PMTSS Series Photomultiplier Tube User Guide...
Page 25: ...www thorlabs com...
