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Photomultiplier Tubes

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Overview

A photomultiplier tube (PMT) has very low noise levels allowing the current generated by incident light to be multiplied over a million times to where individual photons can be detected. Photomultiplier tubes are several orders of magnitude more sensitive than any other detector for UV and visible radiation. We offer PMT models with a full range of spectral sensitivities.

Ultimate low light level detectors
DC or modulated light detection
Housing compatible with various PMTs and detection instruments

See All Features

Products

Compare	Model	Compatibility	rankScore	Wavelength Range	Peak Wavelength	Availability	Price	Brand
77341 Photomultiplier Tube, 185-900 nm Range, UV Glass Window $1,850 In Stock	77341 Photomultiplier Tube, 185-900 nm Range, UV Glass Window	UNIVERSAL	1.0	185-900 nm	400 nm	In Stock	$1,850	Oriel Instruments
77343 Photomultiplier Tube, 400-1200 nm Range, Borosilicate Glass Window $2,055 In Stock	77343 Photomultiplier Tube, 400-1200 nm Range, Borosilicate Glass Window	UNIVERSAL	1.0	400-1200 nm	800 nm	In Stock	$2,055	Oriel Instruments
77348 Photomultiplier Tube, 160-900 nm Range, Quartz Window $2,160 In Stock	77348 Photomultiplier Tube, 160-900 nm Range, Quartz Window	UNIVERSAL	1.0	160-900 nm	400 nm	In Stock	$2,160	Oriel Instruments
77360 Photomultiplier Tube, 185-900 nm Range, UV Glass Window $1,540 In Stock	77360 Photomultiplier Tube, 185-900 nm Range, UV Glass Window	UNIVERSAL	1.0	185-900 nm	400 nm	In Stock	$1,540	Oriel Instruments

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Specifications

Models	77341	77343	77348	77360
Wavelength Range	185-900 nm	400-1200 nm	160-900 nm	185-900 nm
Peak Wavelength	400 nm	800 nm	400 nm	400 nm
Peak Responsivity ¹	74 mA/W	2.2 mA/W	74 mA/W	76 mA/W
Active Area	8 x 24 mm	16 x 18 mm	8 x 24 mm	10 x 24 mm
NEP	1.3 x 10^-16 W	1.2 x 10^-13 W	1.3 x 10^-16 W	1.7 x 10^-16 W
Rise Time	2.2 ns	1.1 ns	2.2 ns	2.2 ns
Transit Time	22 ns	17 ns	22 ns	22 ns
Current	100 µA	10 µA	100 µA	100 µA
Current Amplification	1.0 x 10⁷	3.0 x 10⁵	1.0 x 10⁷	1 x 10⁷
Dark Current	3 nA	350 nA	3 nA	5 nA
Anode Responsivity	7.4 x 10⁵ A/W	2.2 x 10⁴ A/W	7.4 x 10⁵ A/W	7.6 x 10⁵ A/W

Notes:

Cathode responsivity

Specifications

Models	77341	77343	77348	77360
Wavelength Range	185-900 nm	400-1200 nm	160-900 nm	185-900 nm
Peak Wavelength	400 nm	800 nm	400 nm	400 nm
Peak Responsivity ¹	74 mA/W	2.2 mA/W	74 mA/W	76 mA/W
Active Area	8 x 24 mm	16 x 18 mm	8 x 24 mm	10 x 24 mm
NEP	1.3 x 10^-16 W	1.2 x 10^-13 W	1.3 x 10^-16 W	1.7 x 10^-16 W
Rise Time	2.2 ns	1.1 ns	2.2 ns	2.2 ns
Transit Time	22 ns	17 ns	22 ns	22 ns
Current	100 µA	10 µA	100 µA	100 µA
Current Amplification	1.0 x 10⁷	3.0 x 10⁵	1.0 x 10⁷	1 x 10⁷
Dark Current	3 nA	350 nA	3 nA	5 nA
Anode Responsivity	7.4 x 10⁵ A/W	2.2 x 10⁴ A/W	7.4 x 10⁵ A/W	7.6 x 10⁵ A/W

Notes:

Cathode responsivity

Features

Ultimate Low Light Level Detectors

High responsivity pulsed event detection from ms down to µs, our PMTs function from 160 nm to 1100 nm. Pulse measurements from µs to ms are possible at useful photocurrent levels of 100 µA to 1 mA and above. For pulsed applications you can draw up to 50x higher currents for short times, as long as average current ratings are not exceeded.

Side-On Tubes for High Responsivities

These PMTs are side-on type and have similar components as end-on type, but arranged in a much tighter geometry which makes packaging easier and removes some of the environmental sensitivities of these superb detectors. Side-on tubes have faster rise times and reach higher responsivities since most of them use opaque photocathodes, thus avoiding the optical losses associated with the semitransparent photocathodes of end-on tubes. For more details about PMT physics, see our Optical Detection Systems technical note.

Typical Responsivity of 77341, 77348 and 77360

Typical Responsivity of 77343

Housing Compatible with Various PMTs and Detection Instruments

For low noise DC operation or pulsed operation <10 µs, Oriel offers the 70683 PMT housing. It includes a high voltage cable for use with Oriel's model 70706 PMT power supply and a low-noise BNC signal cable. The output from the PMT may be read by a lock-in digital amplifier, such as Oriel's LIDA-SRS-KIT Radiometry System. The model 70693 PMT Housing includes all of these items, as well as an interface module allowing signals to be read by many of Newport's popular power meters. The 70693 is compatible with power meters 1936-R and 2936-R. This module may be removed at any time, allowing the signal to be read by Oriel's lock-in digital amplifier if desired.

Optional Current Preamplifier Facilitates Use of Lock-in Digital Amplifier

The 70710 Current Preamplifier is particularly beneficial with the LIDA-SRS-KIT Radiometry System. The current output from the PMT is converted into a voltage output, which allows users to take advantage of the wider voltage dynamic range of the lock-in digital amplifier.

Build an Entire System with Newport Products

To build a complete PMT System, you need:

Photomultiplier Tube
PMT Housing Model 70683 or 70693
PMT Power Supply Model 70706
Signal reading instrument, such as Newport's power meters or Oriel's model LIDA-SRS-KIT Radiometry System

DC or Modulated Light Detection

All our PMTs can be used in a pulsed mode or DC. The housing determines the operation. Typical rise times and electron transit times (the delay due to the finite time needed for electrons to transverse the multiplier chain) are a function of bias voltage and/or the voltage divider network. These times become shorter at higher bias voltages. You need to balance the desire for fast response with the increased noise levels at high biases.