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Products / Light Analysis /Photodetectors /Photodiode PD (200nm-12um) /Photomultiplier 200-1000nm /

Photomultiplier 200-1000nm

Overview Specification & Model Guide Spectral Graph Order Now!

DH-3 Multi-Alkali Photomultiplier Detector (200-850nm)

For low light-level applications, such as the measurement of spectral irradiance, the photomultiplier is an indispensable spectroradiometer component. The DH-3 photomultiplier, consisting of a housed end-window multi alkali (S20 photocathode) is the detector of choice for such measurements over the UV-Visible region.

The Tube housing contains a PCB-based dynode chain for reliable operation and exceptional linearity. The tube is surrounded by a metal shield to mitigate the effect of external magnetic fields on the performance of the device. The photocathode is maintained at negative high voltage such that the anode be a ground potential for adaption to any transimpedance current amplifier.

Core benefits

ü Detector of choice in the UV-vis

ü High sensitivity and excellent linearity

ü Spectral coverage 200-850nm

ü Low noise

Features

w Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain

w Operated in either the DC or AC regimes

w Recommended for use with 400 series detection electronics

DH_30 Multi-Alkali Photomultiplier (200-850nm)

The DH_30 photomultiplier is an economical solution for low light-level applications throughout the UV-vis. Housing a side-window multi-alkali (S20 photocathode) photomultiplier tube, a mu-metal shield and a PCB based dynode chain, reliable operation can be ensured. The 215 high voltage supply module maintains the photocathode at a negative high voltage.

The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477-pre-amplifier followed by the 496 lock-in amplifier.

Core benefits

ü Economical choice for UV-vis low light level applications

ü High sensitivity

ü Spectral coverage 200-850nm

Features

w Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain

w Operated in either the DC or AC regimes

w Recommended for use with 400 series detection electronics

DH_30_TE Cooled Multi-Alkali Photomultiplier (200-900nm)

The DH_30_TE photomultiplier is an economical solution for low light-level applications throughout the UV-vis and into the NIR. Housing a side-window multi-alkali (S20 photocathode) photomultiplier tube, a mu-metal shield and a PCB based dynode chain, reliable operation can be ensured.
The 215 high voltage supply module maintains the photocathode at a negative high voltage. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477-pre-amplifier followed by the 496 lock-in amplifier.

Core benefits

ü Economical choice for UV-vis-NIR low light level applications

ü High sensitivity

ü Spectral coverage 200-900nm

ü Stable operating temperature and reduced dark current

Features

w Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain

w Peltier-based cooling

w Hermetically sealed housing with quartz window

w Operated in either the DC or AC regimes

w Compatible with Bentham's entire range of monochromators and accessories

w Recommended for use with 400 series detection electronics

DH_3_BI Bi-Alkali End-Window Photocathode (200-600nm)

The DH_3_BI is ideal for low light-level applications in the UV providing high sensitivity with low dark current. Housing an end-window bi-alkali (KCs photocathode) photomultiplier tube, a mu-metal shield and a PCB based dynode chain, reliable operation and excellent linearity can be ensured. The 415 high voltage supply module maintains the photocathode at a negative high voltage.The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477-pre-amplifier followed by the 496 lock-in amplifier.

Core benefits

ü Detector of choice for low light-level applications in the UV

ü Spectral coverage 200-600nm

ü High sensitivity and excellent linearity

ü Low dark current

Features

w Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain

w Operated in either the DC or AC regimes

w Recommended for use with 400 series detection electronics

DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm)

The DH_50 photomultiplier uses temperature control to reduce dark current and extend spectral range of the S20 photocathode. Housing an end-window multi-alkali (S20 photocathode) photomultiplier tube, a mu-metal shield and a PCB based dynode chain, reliable operation can be ensured. The 215 high voltage supply module maintains the photocathode at a negative high voltage. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477-pre-amplifier followed by the 496 lock-in amplifier. .

Core benefits

ü Optimised performance for the most challenging measurements

ü High sensitivity and excellent linearity

ü Spectral coverage 200-930nm

ü Stable operating temperature and reduced dark current

Features

w Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain

w Peltier-based cooling

w Hermetically sealed housing with quartz window

w Operated in either the DC or AC regimes

w Recommended for use with 400 series detection electronics

DH_Si Silicon Photodiode (200-1100nm)

The DH_Si UV-enhanced silicon photodiode offers excellent linearity and low noise over the UV-vis-NIR spectral range. Housing a 10x10mm active area silicon photodiode (200-1100nm), the DH_Si is operated in the photovoltaic mode. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477-pre-amplifier followed by the 496 lock-in amplifier.

Core benefits

ü An economical solution for measurements where a photomul tiplier might otherwise be considered

ü Spectral coverage 200-1100nm

ü Excellent linearity and ultra-low noise

ü Enhanced UV sensitivity

Features

w Housed UV-enhanced silicon photodiode

w Operated in either the DC or AC regimes

w Suitable for free standing applications

w Recommended for use with 400 series detection electronics

Please check the table below for individual specifications

Detector Model	DH_3 Multi-Alkali Photomultiplier (200-850nm)	DH_30 Multi-Alkali Photomultiplier (200-850nm)	DH_30_TE Cooled Multi-Alkali Photomultiplier (200-900nm)	DH_3_BI Bi-Alkali End-Window Photocathode (200-600nm)	DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm)	DH_Si Silicon Photodiode (200-1100nm)
Photocathode	S20	s20	S20	KCs	S20	Silicon
Active area	20mm diameter	20x8mm	20x8mm	20mm diameter	20mm dia,	10 x 10mm
Window material	Fused silica	UV Glass	UV Glass	Fused silica	UV Glass	Quartz
Number dynodes	10	9	9	10	9	nil
Dynode chain resistance	Linear: 750 kΩ Pulse Counting: 3.92 MΩ	Linear: 750 kΩ Pulse Counting: 3.92MΩ	Linear: 750 kΩ Pulse Counting: 3.92 MΩ	Linear: 750 kΩ Pulse Counting: 3.92 MΩ	Linear: 750 kΩ Pulse Counting: 3.92 MΩ	nil
Operating mode	Photoemmisive	Photoemmisive	Photoemmisive	Photoemmisive	Photoemmisive	Photovoltaic
Spectral response range	200-850nm	200-850nm	200-900nm	200-600nm	200-900nm	200-1100nm
Peak wavelength (typ.)	420 nm	420 nm	420 nm	350nm	420 nm	960nm
Dark current (typ.)	500pA at 750V	500pA at 750V	1pA at 750V and -20°C	50pA at 750V	1pA at 750V and -20°C	<1pA
NEP	1 x 10-16 W.Hz-1/2	1.3 x 10-16 W.Hz-1/2	1.3 x 10-16 W.Hz-1/2	1 x 10-16 W.Hz-1/2	1.3 x 10-16 W.Hz-1/2	1.8 x 10-14 W.Hz-1/2
Max. high voltage	1500V DC	1250V DC	1250V DC	2000V DC	1250V DC	nil
Max. anode current	100μA	100μA	100μA	100μA	100μA	nil
Max. operating Temperature	-80 to +50°C	-30 to +50°C	-30 to +50°C	-30 to +60°C	-30 to +50°C	-20 to +60°C
Range of temperature control	nil	nil	-20°C to +20°C	nil	-20°C to +20°C	nil
Temperature dependence of responsivity	nil	nil	nil	nil	nil	Up to 1%/ °C (λ > 950nm)
Shunt Resistance (typ.)	nil	nil	nil	nil	nil	0.2GΩ
Max. photocurrent	nil	nil	nil	nil	nil	2mA
Peak responsivity (typ.)	nil	nil	nil	nil	nil	0.52 A.W-1
Connector	BNC/HV-BNC	BNC/HV-BNC	BNC/HV-BNC	BNC/HV-BNC	BNC/HV-BNC	BNC
Compatibility	Supplied with an interface plate, 4 x M3 clearance holes	Supplied with an interface plate, 4 x M3 clearance holes	Supplied with a quick change interface plate, 4 x M3 clearance holes	Supplied with an interface plate, 4 x M3 clearance holes	Supplied with a quick change interface plate, 4 x M3 clearance holes	4 x M3 clearance holes
Dimensions	nil	nil	nil	nil	nil	80L x 50W x 42H (mm)

DH_3 Multi-Alkali Photomultiplier (200-850nm)

DH_30 Multi-Alkali Photomultiplier (200-850nm)

DH_30_TE Cooled Multi-Alkali Photomultiplier (200-900nm)

DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm)

DH_Si Silicon Photodiode (200-1100nm)

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	Availability	Reference Price (USD)
DH_3 Multi-Alkali Photomultiplier (200-850nm) S20 end-window photocathode PMT, Wavelength range 200-850nm	In Stock	Request for quote
DH_30 Multi-Alkali Photomultiplier (200-850nm) Side-window S20 photocathode PMT, Wavelength range 200-850nm	In Stock	Request for quote
DH_30_TE Cooled Multi-Alkali Photomultiplier (200-900nm) Thermo-electrically cooled, side-window S20 photocathode PMT, Wavelength range 200-900nm	In Stock	Request for quote
DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm) Thermo-electrically cooled, end-window S20 photocathode PMT, Wavelength range 200-930nm	In Stock	Request for quote
DH_Si Silicon Photodiode (200-1100nm) 10x10mm UV enhanced silicon photodiode, Wavelength range 200-1100nm	In Stock	Request for quote
DH_3_BI Bi-Alkali End-Window Photocathode (200-600nm) End-window KCs photocathode bi-alkali PMT, Wavelength range 200-600nm	In Stock	Request for quote

DH_3_BI Bi-Alkali End-Window Photocathode (200-600nm) - Parameter

DH_Si Silicon Photodiode (200-1100nm) - Parameter

DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm) - Parameter

DH_30_TE Cooled Multi-Alkali Photomultiplier (200-900nm) - Parameter