PHOTOMULTIPLIER TUBES (PMTs)

Photodiode

Detection of ultra fast phenomena with wide dynamic range

A Photodiode is a device for detecting ultra-fast optical events. It generates an electrical output when illuminated by light and has no internal gain but can work over a large dynamic range.

Features

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Optimised anode assembly

provides ultra fast response down to 50 ps risetime

Range of active diameters available

10 mm, 25 mm and 40 mm

No internal gain mechanism

enables very wide dynamic range

Available with conductive photocathode undercoating

for increased large signal linearity

Applications

Overview

The vacuum photodiode is a sealed vacuum tube with a much faster response than solid state photodiodes.

Vacuum Photodiodes do not contain the MicroChannel Plate electron multipliers used in our Photomultiplier Tubes, resulting in unity gain devices. A benefit of this is the vacuum photodiode’s high dynamic range, enabling measurement of extremely high light signals without degradation.

Range

The table below outlines the Part Number format for our standard product range. To talk further about these products, or the custom design of an image intensifier for your application, then please Contact us.

Example: MCP125/Q/S20/P43/IFO

is a 25mm diameter single MCP image intensifier, with a
fused silica input window, S20 photocathode, and P43
phosphor, on a fibre optic output window

TYPE

MCP

Active Diameter (mm) 

Input Window 

Photocathode 

Extended Dynamic Range Underlayer 

PD

0

10

Q (fused silica) 

CsI 

M (Mesh) 

25

M (MgF2) 

SB 

TCU 

40

BI 

S20B 

S20 

S25 

Specifications

Spectral Response

Normalised Response

Documentation

Contact Us

26 Castleham Road
St Leonards on Sea
East Sussex, TN38 9NS
United Kingdom

Phone:
+44 (0)1424 850 555
Email:
sales@photek.co.uk