Spectroscopy

Spectroscopy has important applications in a wide range of fields, such as chemistry, biology, and biochemistry; materials science; astronomy and space exploration; environmental analysis; and quality control or process control in pharmaceutical manufacturing, chemical manufacturing, and the processed food and beverage industries. Hamamatsu manufactures hundreds of detectors, miniature spectrometers, and light sources as both standard units and products customized to fit your specific requirements in the following areas:


UV-visible | Raman | Infrared | X-ray

 

UV-visible spectroscopy

Spectrometers


UV mini-spectrometers are compact polychromators with optics, image sensor, and driver circuit integrated into a small case. They are ideal for low-light level measurement and come with sample software for setting measurement conditions, acquiring and saving data, and displaying graphs.


See UV mini-spectrometers
 

 

Mini- and micro-spectrometers are compact and ultra-compact devices with a spectral response range of 200 to 1100 nm. They are available in a variety of designs specifically for OEMs as well as for end users performing in situ measurements.


See mini-/micro-spectrometers for visible spectra
Related content: Measuring beer color with a micro-spectrometer
Related content: Researchers develop a low-cost micro-spectrometer setup
 

 

Image sensors


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.


See CMOS image sensors
Technical note: Image sensor product selection
 

 

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.


See CCD image sensors
Technical note: Image sensor product selection

 

 

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.


See NMOS image sensors
Technical note: Image sensor product selection
 

 

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.


See all photodiodes
Related content: Overview of Hamamatsu's silicon photodiodes

 

 

Multi-pixel photon counters (MPPC) are silicon photomultipliers (SiPM) that feature high gain, low noise, low voltage operation, and excellent time resolution. A wide selection of single-element detectors, multi-element arrays, and modules are available. An example application is fluorescence spectroscopy.


See all MPPC products
Related content: Overview of Hamamatsu's MPPC
 

 

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, and pollution monitoring.


See photomultiplier tubes
Technical note: Head-on PMT product selection
 

 

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.


See deuterium lamps
 

 

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


See hollow cathode lamps
 

 

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.


See xenon lamps
 

 

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.


See xenon flash lamps
 

 

Lamp modules


Compact D2 lamp modules are stable and small deuterium (S2D2) UV point light sources which are drastically smaller than ordinary deuterium lamps, while still maintaining the same high stability and a unique electrode structure that delivers high luminance.


See compact D2 lamp modules
 

 

H2D2 light source unit contains a high-brightness, high-end deuterium (H2D2) lamp that emits light at a brightness several times higher than conventional deuterium lamps. It is highly stable, has a long service life, and allows air-cooled operation thanks to a specially designed housing.


See H2D2 light source unit
 

 

Xenon flash lamp modules are compact devices that integrate a xenon flash lamp (2W or 5W), power supply, and trigger socket. They have high stability, long life, fiber connection, and mercury-free construction.


See xenon flash lamp modules
 

 

UV-VIS fiber light sources a range of 200nm to 1600 nm and come in two types: one with S2D2 and tungsten lamps, or one with high brightness deuterium and tungsten halogen lamps. They are suitable for use in portable systems.


See UV-VIS fiber light source
 

 

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Raman spectroscopy

Spectrometers


Hamamatsu's mini-spectrometers for Raman spectroscopy offer high sensitivity and high spectral resolution, and are designed with a quartz transmission grating for high throughput.


See Raman mini-spectrometers
 

 

Modules


Portable Raman spectrometer module C12710 combines our most advanced technologies, including mini-spectrometers and focusing optics for laser excitation. It is designed for use with the SERS substrate J12853, which enhances weak Raman scattered light from the molecules, making highly-sensitive Raman spectroscopic analysis possible. The exact specifications of this product are customizable.


See portable Raman spectrometer module
See SERS substrate
 

 

SERS module C13560 includes all functions (excitation LD, polychromatic dispersion device, optical and control circuit systems) needed to perform Raman measurements and utilizes SERS substrate J13856 to facilitate simple screening applications such as POCT (point-of-care testing). It is customizable to meet functional requirements for OEM applications.


See SERS module
 

 

Image sensors


CCD image sensors are sensitive to low and ultralow light levels, and feature high quantum efficiency, low noise, and wide dynamic range.


See CCD image sensors
Technical note: Image sensor product selection
 

 

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Infrared detection

Spectrometers


NIR mini-spectrometers are compact devices with a spectral response range of 320 to 2550 nm. They are available in a variety of designs specifically for OEMs as well as for end users performing in situ measurements.


See NIR mini-spectrometers
Application note: Beverage analyzer based on NIR spectroscopy
 

 

Image sensors


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.


See InGaAs linear image sensors
Technical note: Image sensor product selection
 

 

Point detectors


 

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.


See quantum cascade lasers
 

 

LEDs are opto-semiconductors that convert electric energy into light energy and offer lower cost and longer service life than laser diodes. These high output power LEDs are ideal for optical switches, encoders, surveying and optical communication.


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X-ray spectroscopy

Cameras


The C10413 radiation line sensor enables simultaneous measurement of images at different energy regions (as many as 5 different energy thresholds). It consists of a 64-channel cadmium telluride linear array detector and a signal processing ASIC with comparators and counters. Its measurement range spans X-rays and gamma-rays.


See radiation line sensor
 

 

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.


See x-ray cameras
 

 

Detectors


Silicon 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.


See silicon PIN photodiodes
Related content: Overview of Hamamatsu's silicon photodiodes
 

 

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.


See photomultiplier tubes
Technical note: Head-on PMT product selection
 

 

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. In addition to circular and rectangular MCPs in various sizes, many assembly options with a readout device and pre-mounted electrode leads and supports are also available.


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