PGS ? Plane Grating Spectrometer0 pages

Optical Sensor Systems from Carl Zeiss

The NIR Specialists

PGS Family

Detector

The NIR Specialists
PGS NIR
1.7-512

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blazed plane gratings
aspheric lenses
mono-fiber with slit as optical input
cooled InGaAs photodiode array as
opto-electronic output

Central body
In the PGS family, a special aluminum alloy (coefficient
of expansion a ~ 13 x 10 -6) is used for the central body.
This housing is the carrier of the blazed grating and of
the aspheric collimator and focusing lens. The input fiber
and the detector are permanently connected to the central body, therefore providing excellent stability.

Hamamatsu

Hamamatsu

Multiplexed InGaAs
SU 512LD-1.7 T1

Multiplexed InGaAs
G9203

Multiplexed InGaAs
G9206*

Multiplexed InGaAs
G9206*

512

256

256

256

Dimensions of pixels

25 x 500 µm

50 x 500 µm

50 x 250 µm

50 x 250 µm

*According to manufacturer specification up to 5 defect pixels are allowed.

Preamplifier
PGS NIR
1.7-512
Output

differential output

Output voltage range

ca. ± 4 V

Rise time

40 V/µs differential

Clock-Rate

40 KHz up to 2 MHz

Read out pixel rate

10 – 500 kPixel/s

Power consumption

PGS NIR 1.7
1.7-256

650 mW incl. diode array (without cooling)

PGS NIR 2.0
2.0-256

PGS NIR 2.2
2.2-256

differential output
ca. ± 4 V
40 V/µs differential
80 KHz up to 4 MHz
10 – 500 kPixel/s
650 mW incl. diode array (without cooling)

System data

Gratings
The gratings for the PGS family are mechanically ruled or
holographically recorded plane gratings. The maximum
efficiency is adapted to the special wavelength range in
the NIR. The grating surface with the clear diameter of
the lenses is dimensioned so that the light of a fiber with
NA of up to 0.37 can be hold.

Realised with

15-Bit-AD-conversion
Clock-Rate 80 KHz

Noise

typ. < 4 count standard deviation of dark signal

Dynamic range

≥ 13 Bit

Carl Zeiss MicroImaging GmbH
07740 Jena, Germany
Industrial | Jena Location
Phonet:t + 49 3641 64 2838
Telefaxt:t + 49 3641 64 2485
E-Mailt:t info.spektralsensorik@zeiss.de
www.zeiss.de/spectral

72-1-0005/e – printed 03.11

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Hamamatsu

Number of pixels

Detector
For the PGS NIR 1.7 standard InGaAs is used for the
wavelength range up to 1700 nm. Detectors with 256 or
512 elements are available. To go up to the wavelength
range of 2.2 µm the use of Extended InGaAs is necessary.
In the PGS NIR 2.0 and PGS NIR 2.2 detectors with 256
elements are used. For the Extended InGaAs arrays,
blocking filter for suppressing the 2nd diffraction order
is applied to the array.

Sensor
Unlimited Inc

Information subject to change.
Printed on environmentally friendly paper
bleached without chlorine.

Optical components of the PGS family

PGS NIR
2.2-256

Typ

Input fiber
The coupling of light is performed in the standard way
via a glass monofiber. These fibers have a diameter of
600 μm and a NA = 0.22. The end of the fiber features a
slit with a height of 500 μm (NIR 1.7) or 250 μm (NIR 2.2).
The slit heights at the entrance are adapted to the pixel
heights of the InGaAs arrays. A crosssectional conversion
similar to the silicon detectors is not necessary.

PGS NIR
2.0-256

Producer

The spectrometers of the PGS family are designed for
use in the NIR. InGaAs (indium-gallium-arsenide) is used
as a detector material in this wavelength range. The special combination of aspheric collimator and focusing lens
allows the use of plane gratings optimized for the NIR,
while maintaining good flat field correction of the spectral imaging. Excellent long-term stability is ensured by
the permanent connection of all optical components.

PGS NIR
1.7-256

Plane Grating Spectrometer
from Carl Zeiss