v10308u Hamamatsu Photonics, K.K.,, v10308u Datasheet - Page 6

• Manufacturer Part Number: v10308u
• Description: Image Intensifiers
• Manufacturer: Hamamatsu Photonics, K.K.,

5
***: Shutter time: Defined as the rise time. The input gate pulse width should be at least twice the shutter time.
**: Relative value with output from P-43 set as 1. Measured with 6 kV voltage applied.
#Select the
effective area that
matches the
readout method.
#Select the window
according to the
required sensitivity at
short wavelengths.
#Select the
photocathode
according to the
required sensitivity at
long wavelengths.
#Select the number
of stages according
to the required gain.
#Select the decay
time that matches
the readout method
and application, and
the spectral emission
that matches the read-
out device sensitivity.
#Select the window
that matches the
readout method.
#Select the gate
time that matches
the required time
resolution.
*: Depends on the input pulse width.
GSELECTION CRITERIA (Factors for making the best choice)
GSELECTION CRITERIA (Factors for making the best choice)
Phosphor Screen
Effective Area
Output Window
Photocathode
Input Window
Gate Time
Items
MCP
10 ns ( 25 mm type)
20 ns ( 40 mm type)
Photocathode Type
Twisted fiber optics
Selectable Range
Borosillicate glass
Borosillicate glass
5 ns ( 18 mm type)
Fiber optic Plate
Fiber optic plate
Synthetic silica
Phosphor Type
Window Type
Extended red
Multialkali
multialkali
200 ps***
250 ps***
Ag-O-Cs
1 stage
2 stage
3 stage
Bialkali
GaAsP
(FOP)
Cs-Te
(FOP)
(TFO)
GaAs
MgF
18 mm
25 mm
40 mm
P24
P43
P46
P47
2
Spectral Response
Transmitting Wavelength
160 nm or longer
350 nm or longer
115 nm or longer
300 nm or longer
The 25mm and 40 mm diameter types transfer a larger amount of image information to a
readout device coupled by using a reduction optical system such as a relay lens and
tapered FOP. This lets you acquire high resolution images.
The 18 mm diameter type is compatible with 1-inch CCDs.
Wavelength [nm]
Standard output window and ideal for direct coupling to a CCD with FOP input window, allowing
highly efficient readout. If the phosphor screen is not at ground potential, a NESA (transparent
conductive film) may be needed to prevent noise generated by a high voltage from getting into
the CCD. When a relay lens is used, it should be focused on the edge of the FOP.
For relay lens readout. The relay lens should be focused on the phosphor screen surface.
FOP twisted 180 ° to invert an image. This output window is only for nighttime viewing applications where the output image
is directly viewed by eye. Using a TFO reduces the eyepiece length, making the nighttime viewing unit more compact.
Mesh type (V5548U)
Metallic thick film type
Metallic thin film type
Up to 1200 nm
Peak Emission
Up to 900 nm
Up to 950 nm
Up to 650 nm
Up to 320 nm
Up to 920 nm
Up to 720 nm
Gain: about 10
Gain: about 10
Gain: more than 10
500
545
530
430
3
6
0.2 µs to 0.4 µs*
Standard input window with high UV transmittance.
Optical element that transmits an optical image with high efficiency and
no distortion. An image should be focused on the front surface of FOP.
Alkali halide crystal that transmits VUV radiation yet offers low
deliquescence.
Most common glass material used in the visible to near IR region. Not suitable for UV detection.
Made from 3 kinds of alkali metals, having high sensitivity from the UV
through near IR region.
Made from 3 kinds of alkali metals, having high sensitivity extending to
950 nm in the near IR region. Ideal for nighttime viewing.
Made from 2 kinds of alkali metals, having sensitivity from the UV to
visible region. Background noise is low.
Having sensitivity only in the UV region and almost insensitive to wavelengths
longer than 320 nm and visible light. Often called "solar blind photocathode".
Sensitive to a wide spectral range from visible to near IR, but mainly
used for near IR. Since thermionic emission from the photocathode is
high, this is usually cooled to below 0 °C. Cooling may not be required
when used in gate mode.
Made from group 3-V crystal having high sensitivity from the visible to
near IR region. Spectral response curve is nearly flat from 450 to 850 nm.
Made from group 3-V crystal having very high sensitivity in the visible
region (quantum efficiency 50 % Typ. at 530 nm).
3 µs to 40 µs*
Decay Time
7
(V4323U,
(For photon counting imaging)
0.11 µs
10 %
1 ms
V6561U)
Description/Value
Power Efficiency
Relative **
0.4
0.3
0.3
1
Features
Features
Yellowish green
Yellowish green
Emission Color
Purplish blue
Green
Typical decay time
Short decay time
Short decay time
NOTE