C11118GA_15 Datasheet, PDF (1/7 Pages) Hamamatsu Corporation – Mini-spectrometer

Mini-spectrometer
TG series
C11118GA
Long-wavelength type (to 2.55 μm) near-
infrared mini-spectrometer
Hamamatsu TG series mini-spectrometers are polychromators integrated with optical elements and an image sensor. Light to
be measured is guided into the entrance port of TG series through an optical fiber and the spectrum measured with the built-
in image sensor is output from the USB port to a PC for data acquisition. The C11118GA has sensitivity extending to longer
wavelengths (up to 2.55 μm) than the existing C9914GB (up to 2.2 μm). The C11118GA comes supplied with free evaluation
software that allows setting measurement conditions, acquiring and saving data, and displaying graphs. Original measure-
ment software can be designed on an end-user’s side as DLL’s function specification is disclosed.
Features
Applications
Spectral response range: 0.9 to 2.55 μm
Measurement of C-H group absorption (2.3 μm band)
Compatible with USB 2.0 interface
Soil analysis and component analysis
High throughput due to transmission grating made of
quartz
Highly accurate optical characteristics
Low noise: cooled type
Compact design for easy assembly
Wavelength conversion factor*¹ is recorded in internal
memory
Compatible with external trigger
*1: A conversion factor for converting the image sensor pixel number into a wavelength is recorded in the module.
A calculation factor for converting the A/D converted count into the input light intensity is not provided.
Optical characteristics (Ta=25 °C)
Parameter
Specification
Unit
Spectral response range
0.9 to 2.55
μm
Spectral resolution (spectral response half width)*²
20 max.
nm
Wavelength reproducibility*³
-0.8 to +0.8
nm
Wavelength temperature dependence
Spectral stray light*²*⁴
-0.08 to +0.08
-30 max.
nm/°C
dB
*2: Depends on the slit opening. Values were measured with the slit listed in the table " Structure".
*3: Measured under constant light input conditions, etc.
*4: When monochromatic light of λ=1700 nm is input, spectral stray light is defined as the ratio of the count measured at the input
wavelength, to the count measured at a wavelength 40 nm longer or shorter than the input wavelength.
Electrical characteristics (Ta=25 °C)
Parameter
A/D conversion
Integration time*⁵
Interface
USB bus power current consumption
Current consumption for cooling element (+5 V)*⁷
Current consumption for cooling fan (+12 V)*⁷
*5: Depends on the image sensor dark current.
*6: Excluding defective pixels
*7: Maximum value in steady state. Note that inrush current flows at start-up.
Specification
16
6 to 40000*⁶
USB 2.0
250 max.
2.8 max.
0.2 max.
www.hamamatsu.com
Unit
bits
μs
-
mA
A
A
1