Spectroscopy

Hamamatsu manufactures an immense variety of products for spectroscopy applications: not only hundreds of detectors and light sources, but also miniature spectrometers and even some spectrophotometric systems. We offer a large inventory of standard products, and welcome requests for customized products that fit your specific requirements. Below, you'll find introductions to the many products we make for spectroscopy.


Components for UV-visible-NIR spectroscopy


 

Image sensors (photodiode arrays)

CMOS image sensors are photodiode arrays suitable for detecting moderate to high light levels, and feature high UV sensitivity, low power consumption, and wide dynamic range. Example applications include UV-visible spectroscopy and HPLC.


CCD image sensors are sensitive to low and ultralow light levels, and feature high quantum efficiency, low noise, and wide dynamic range. Example applications include fluorescence spectroscopy and Raman spectroscopy.


NMOS image sensors are photodiode arrays suitable for detecting moderate to high light levels, and feature high UV sensitivity, excellent linearity, wide dynamic range, and low power consumption. Example applications include HPLC and UV-visible spectroscopy.


Point detectors and modules

Photodiodes are compact, lightweight detectors of moderate to high light levels, and have wide spectral response range, excellent linearity, and low dark current. A wide selection of detectors and modules are available. Example applications include UV-visible spectroscopy and pollution monitoring.


Multi-pixel photon counters (MPPC) are silicon photomultipliers (SiPM) that feature high gain, excellent time resolution, low bias operation, low noise, and insensitivity to magnetic fields. A wide selection of detectors and modules are available. An example application is fluorescence spectroscopy.


Photomultiplier tubes (PMT) are low light detectors that feature high sensitivity, low dark noise, high stability, and ultrafast response. A wide selection of detectors, assemblies (PMT + voltage divider), and modules (PMT + voltage divider + HVPS circuit) are available. Example applications include atomic absorption spectroscopy, atomic emission spectroscopy, UV-visible spectroscopy, fluorescence spectroscopy, gas chromatography, HPLC, pollution monitoring, and Raman spectroscopy.


Light sources

Deuterium lamps feature UV emission (115 - 400 nm), excellent output stability, high brightness, and long service life. Example applications include UV-visible spectroscopy, fluorescence spectroscopy, atomic absorption spectroscopy, pollution monitoring, and HPLC.


Hollow cathode lamps are metal-vapor discharge lamps available as single-element and multi-element types. They are designed for atomic absorption spectroscopy.


Xenon lamps emit UV to IR light (185 - 2000 nm), and feature high output intensity, high stability, and long life. Example applications include fluorescence spectroscopy, HPLC, pollution monitoring, and UV-visible spectroscopy. 


Xenon flash lamps are pulsed light sources that emit UV to IR light (160 - 2000 nm) with high intensity and low thermal effects. Example applications include fluorescence spectroscopy, UV-visible spectroscopy, pollution monitoring, and HPLC.


 

Components for infrared (IR) detection

Image sensors (photodiode arrays)

InGaAs linear image sensors are photodiode arrays sensitive to NIR wavelengths from 0.9 µm to 2.6 µm, and feature built-in CMOS integrated circuits for easy operation. Example applications include NIR spectroscopy, gas analysis, and water content analysis.


Point detectors

Infrared detectors are fabricated from compound semiconductors, and we offer many types to cover the infrared region from approximately 0.8 µm to 25 µm. Example applications include gas analysis, water content analysis, IR spectroscopy, and FTIR spectroscopy.  


SWIR/NIR

Two-color detectors (0.2 - 4.85 µm)

InGaAs photodiodes (0.5 - 2.6 µm)

InAs photovoltaic detectors (1 - 3.8 µm)


Mid-IR

Two-color detectors (0.2 - 4.85 µm)

InSb photovoltaic detectors (1 - 5.5 µm)

InSb photoconductive detectors (1 - 6.7 µm)

InAsSb photovoltaic detectors (1 - 8.3 µm)

Thermopile detectors (1 - 25 µm)


Light sources

Quantum cascade lasers (QCL) are compact and lightweight semiconductor lasers that emit in the mid-infrared range (4 - 10 µm). Example applications include gas analysis and IR spectroscopy.


 

Components for mass spectrometry

Ion detectors

Electron multiplier tubes (EMT) are ion detectors that feature wide dynamic range, robust structure, and high gain. Various configurations are available. They are suitable for quadrupole mass spectrometry and magnetic sector mass spectrometry.


Microchannel plate (MCP) assemblies are ion detectors with a fast time response suitable for time-of-flight measurements. Example applications include time-of-flight mass spectrometry (TOF MS) and quadrupole time-of-flight mass spectrometry (Q-TOF MS).


See more info on ion detectors for mass spectrometry

 

Light sources for photoionization

Deuterium lamps serve as UV light sources for soft ionization methods under vacuum or at standard pressure (e.g., atmospheric pressure photoionization). They emit UV light (115-400 nm) that cause minimal fragmentation of biomolecules and other compounds, making it easier to identify molecular weights or to determine amounts of specific ions. Our deuterium lamps feature very stable light output, a long lifetime, and easy connection to a vacuum system.


 

Devices for X-ray spectroscopy

Cameras

The C10413 radiation line sensor can generate highly detailed X-ray spectra. It consists of a 64-channel cadmium telluride linear array detector and a signal processing ASIC that has comparators and counters. It features high radiation detection efficiency and a wide energy measurement range.


The C8000-30D cameras feature a CCD image sensor that directly detects soft X-ray photons without a scintillator, and are suitable for soft X-ray spectroscopy. The beryllium window camera is designed to detect 3 to 10 keV X-rays under ambient conditions. The camera model for vacuum chambers detects X-rays within the 20 to 10,000 eV energy range.


Detectors

Si PIN photodiodes can be coupled to scintillators and integrated into X-ray fluorescence (XRF) analyzers. They feature high-speed response, a large photosensitive area, high sensitivity to BGO and CsI(Tl) scintillator emission, and good energy resolution.


Photomultiplier tubes (PMT) can be coupled to scintillators and integrated into XRF analyzers. These low light detectors feature high sensitivity, low dark noise, and ultrafast response. A wide selection of detectors, assemblies (PMT + voltage divider), and modules (PMT + voltage divider + HVPS circuit) are available.


Microchannel plates are 2D sensors that detect X-rays, gamma rays, electrons, and ions. They are suitable detectors in soft x-ray spectrometers used for surface analysis, for example. Many options are available: circular and rectangular MCPs in various sizes, as well as MCP assemblies with an MCP, a readout device and premounted electrode leads and supports.


 

Miniature spectrometers


 

We design and manufacture miniature spectrometers capable of measuring fluorescence, UV-visible absorption and reflection, NIR reflection and emission, or Raman scattering. They integrate a detector and optical system into a compact housing, which is made possible by combining MEMS (microelectromechanical systems) and image sensor technologies.


Micro-spectrometers

By adopting MEMS technology, we have produced a micro-spectrometer the size of a fingertip, allowing easy integration into equipment and instruments. In addition, the micro-spectrometer can be connected to portable devices, such as smartphones and tablets, and serve as a detector for mobile spectroscopy applications.


See the C12880MA micro-spectrometer
See the C12666MA micro-spectrometer

Other mini-spectrometers

For OEMs, we offer the RC and MS series of spectrometer heads specifically designed for installation into instruments and equipment. They integrate a reflective grating and a CMOS linear image sensor into a compact case, and can be used for visible and SWNIR measurements.


For end-users performing in situ measurements, we offer our TG and TM series of mini-spectrometers. By guiding light through an optical fiber into a mini-spectrometer, the light spectrum can be measured by the detector (CCD, CMOS, or InGaAs) and then output from the mini-spectrometer’s USB port to a PC for data acquisition and analysis. Several mini-spectrometers are available, covering a wide range of measurements including UV, UV-visible, visible-NIR, SWNIR, and Raman.


See all mini-spectrometers

 

Benchtop spectrophotometric systems


 

We also design and build specialized systems that perform spectral measurements for analyzing properties of fluorescent/photoluminescent materials and for studying ultrafast phenomena.


Photonic multichannel analyzers (PMA) consist of a spectrograph and a high-sensitivity detector in one package. Measurements are performed by bringing the PMA's optical fiber close to the sample in most applications, without the need for a special light collection system. Since the spectrometer and photodetector are fixed, these multichannel analyzers are stable. Also, the wavelength axis and spectral response characteristics are already calibrated, so spectral measurements can be carried out easily and accurately. Various models are available to accommodate a wide range of spectrum and sensitivity requirements.


Fluorescence/photoluminescence lifetime spectrometers

• The Quantaurus-Tau is a compact benchtop instrument that measures the fluorescence lifetimes and photoluminescence spectrum of materials such as fluorescent probes/dyes, quantum dots, phosphors, OLED materials, and organometallic complexes. It is easy to operate and can accommodate samples in a variety of forms (e.g., thin films, solids, powders, and solutions).


NIR photoluminescence lifetime measurement systems determine the photoluminescence spectrum and lifetime in the NIR region (580-1400 nm) of PV materials.


Picosecond fluorescence lifetime measurement systems measure fluorescence occurring at high speeds and low light levels by using the time-resolved photon counting method.


Time-resolved absorption spectrum analysis systems measure transitional absorption in the time region from picoseconds to nanoseconds. This allows tracking intermediate products that are generated or disappear during photochemical reactions in liquids, solids, and thin films.


Flash photolysis systems measure transient absorption spectrum and time-resolved fluorescence spectrum in the time region from nanoseconds to milliseconds.


See all fluorescence/photoluminescence lifetime spectrometers

 

Luminescence efficiency spectrometers

• The Quantaurus-QY is a compact benchtop spectrometer that determines the absolute quantum yield of fluorescent probes/dyes, quantum dots, phosphors, OLED materials, and organometallic complexes. It is easy to operate and can accommodate samples in a variety of forms (e.g., thin films, solids, powders, and solutions).


External quantum efficiency measurement systems use an integrating sphere to measure the external quantum efficiency of LEDs.


Brightness light distribution characteristics measurement systems determine the luminescence intensity, spectrum, and the emission angle of luminescent devices such as LEDs by using the electroluminescence method.


See all luminescence efficiency spectrometers

 

Streak cameras

Streak cameras are used for capturing ultrafast optical phenomena occurring in an extremely short period of time (femtoseconds, picoseconds, and nanoseconds). We offer several types: universal streak cameras covering a wide spectral range, NIR streak cameras, X-ray streak cameras, femtosecond streak cameras, and streak cameras with high dynamic range.


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