Applications Of Spectroscopy – Plasma Monitoring, Wirebonding And More

Spectroscopy is the study of electromagnetic waves, usually in the form of light, radiating from a material source. It involves a large number of techniques that makes use of the radiation to identify and obtain information from the target material. Techniques have been developed for their use in a wide range of applications ranging from identification of materials, plasma monitoring, astronomy, imaging, medicine, and so much more.

The fundamental process behind spectroscopy is to emit a beam of electromagnetic radiation, the intensity of which depends on the application, to the target material and observe the interaction.

We tailor specific hardware and software solutions for established, topical, and emerging applications. If we do not have a solution for your application, you can reach out to us and we will be happy to assist you with the appropriate advice. 

Active Thermography


Active Thermography

The essential feature of active thermography is the targeted supply of energy to the test object. A temporal and spatial characteristic heat flow results depending on the geometry and thermal properties of the test subjects. Its progression on the surface of the test object is captured by a thermographic camera.

  • Quality assurance for bonded, welded, soldered and other joints by means of cavity detections (e.g. on vehicle interior parts) 
  • Detection of material defects in composites and cracks in metals
  • Quality assurance of intermediate products (e.g. layered compounds)
  • Localisation of defects in joints such as cavities, defective welding seams/points
  • Assessment of thermal cutting and injection processes
  • Testing of metallic and non-metallic materials/material compounds
  • Tests of internal structures, such as fractures or impacts in honeycomb lightweight constructions

Modular System Design for Precisely Fitting Inspections

The versatile application options of active thermography require an elaborate configuration of every single inspection system. InfraTec offers a wide variety of necessary components along with a modular system architecture. The high-resolution cameras, efficient control and evaluation software as well as the continuously operable excitation sources and controllers are interchangeable within the system and therefore allow a flexible adaptation to upcoming requirements.

Applications of Active Thermography:

  • Detection of layer structures, delaminations and inserts in plastics, for instance of wind turbines or CFRPs of the automotive and aerospace industry.
  • Investigation of interior structures, for instance of breakage or impacts on Honeycomb lightweight constructions.
  • Recognition of deeper material deficiencies, such as blowholes or ruptured laser welding seams.

Wire Bonding Inspection

Wire Bonding

Wire Bonding Inspection

High-speed imaging service for wire bonding inspection. Help to capture Common Causes of Wire Bonding Failures. Looping Problems, Bond Placement/Geometry Problems and other Bonding Site/Substrate Issues.


Wire bonding is a very important process in wafer packaging. The accuracy of this process will determine the packaging quality of the final product. Every single unit (chip) sawed from a wafer manufactured by a semiconductor company is sent for bonding before packaging.The bonding machine picks up one chip and places it onto the substrate and then links the bond pad to its corresponding lead using the gold wire continuously. After the wire bonding process, the dam glob process is continued to protect the chip and the wire from damage. 

Diffusion Optical Spectroscopy Analysis

About Diffusion Optical Spectroscopy Analysis

Introduction: Laser hair removal needs an accurate understanding of tissue structure and chromophores content in order to optimize the selection of laser irradiation parameters. None of the optimized laser therapy might lead to side effects in skin tissue such as severe erythema, burn, scar etc. Therefore, guidance by a noninvasive real-time diagnostic method like optical spectroscopy technique is beneficial. The purpose of this survey is to analysis the skin hemoglobin spectrum quantitatively before and after hair removal laser irradiation to minimize the side effects of the procedure. Methods: To carry out a spectroscopy study, a halogen-tungsten light source was used in the wavelength region of 400-700 nm on an ocean optic device. The measurements were made on the facial area under identical conditions. Total 19 volunteers for laser hair removal by gentle laser Candela, ranging 14-49 years old, were included in the study. A total of 18 spectra were taken from each person, 9 spectra before hair removal as a reference and 9 subsequent spectra. Colorimetry was done for all acquired before and after spectrums using Origin software (version 8.6). Then, the erythema index derived for each spectrum. Statistical analysis of correlation and normalization in colorimetry data were done using data analysis by SPSS (version 16). Results: Spectra analysis, before and after optical reflectance spectrums in laser hair removal procedure, revealed the subpeak derivation, and concentration on special visible wavelength 510-610 nm. We studied the changes of skin chromophores absorption. The derived erythema index [E] and colorimetry parameters a*, b*, l* were compared and correlated statistically. There was a statistically considerable direct linear correlation between a* and E while inverse linear correlation was observed for l* and E and no correlation for b* and E. Conclusion: Diffuse reflectance spectroscopy showed its potency as an accurate, noninvasive real-time as complementary method for laser treatment to detect erythema as a complication of the method, in order to optimize the parameters based on the tissue characteristics in various candidates.

InfraTEC FOV Calculator

InfraTEC Camera Field of View calculator

Plasma Monitoring with Miniature High-Resolution Spectrosco


Plasma Monitoring with Miniature High-Resolution Spectroscopy

A modular spectroscopy setup based on the Ocean Optics HR2000+ high resolution spectrometer was used to monitor changes in argon plasma emission following the introduction of different gases to a plasma chamber. The measurements were done in a closed reaction chamber with the spectrometer coupled to a fiber and cosine corrector looking through a small window in the chamber. The measurements demonstrated the viability of modular spectroscopy components to acquire plasma emission spectra in real time from a plasma chamber. Plasma characteristics determined from these emission spectra can be used for monitoring and controlling plasma-based processes.


Laser Weilding



Optical Oxygen Sensing


 Learn more about Oxygen sensing here.


DIC. Analysis (Digital Image Correlation)


Learn more about DIC Analysis here.

PIV (Partical Image Velocimetry)


Learn more about PIV here.

THz Imaging

Real-time Terahertz Imaging

The innovation of a programmable homogeneous illumination pattern opens up several applications with increased performance. The technique has been tested on different variants of real-time illumination schemes. The following results illustrate that this technique gives exceptional results either in linear scan configuration or in full-field imaging acquisition. Moreover, the flexibility of Terahertz Imaging gives access to countless possibilities and applications.

Oxygen Sensing

Optical Oxygen Sensing


Ocean Insight optical oxygen sensing materials can be applied to various surfaces including probes and patches, making them customizable to each application. Because the sensors consume no oxygen, they can be used in continuous contact with viscous samples. Also, unlike oxygen electrodes, optical oxygen sensors do not require continuous stirring.

 Advantages of Optical Oxygen Sensing

  • Sensors detect molecular oxygen in gas and liquid phases across a wide range of temperatures and concentrations
  • Continuous sample contact: Optical oxygen sensors do not consume the sample
  • Rapid response time: Sensors respond within 1 second or less
  • Low-level detection: At the lowest oxygen concentrations, sensors can resolve to 0.004% oxygen at 1 atm
  • Multiple form factors: Sensors are available as probes, adhesive patches or integrated into biobags and other vessels

Multispectral Imaging

FD-1665 Multispectral Camera System

FD-1665 Multispectral Camera System


The multispectral imaging camera enables a range of applications including medical diagnostics, machine vision in process control, and safety and security. It is available in several configurations with resolution from 0.3MP (VGA) to 2MP, at frame rates up to 70 frames per second. Users can select from preconfigured 3-, 5- and 7-channel RGB-NIR cameras or configure a 3CCD camera with custom-specified filters for bands between 400-1100 nm.  

The FD-1665 has Gigabit Ethernet output for independent control of exposure, gain and readout. Each sensor can be triggered automatically for simultaneous exposure or controlled separately via hardware or software. By mixing color and monochrome CCDs, 3-9 spectral bands can be captured simultaneously.  

Hyperspectral Imaging

Hyperspectral Imaging - Pushbroom

Hyperspectral Imaging Enables Industrial Applications


Hyperspectral imaging systems supply classification and identification information, in addition to image information. This property makes them useful for numerous industrial and other applications, many of which have yet to be discovered. New technology and manufacturing capabilities make it possible to design and fabricate systems that are compact, high-performing and cost-effective. With these new systems, the market need for hyperspectral information will grow rapidly, as awareness and accessibility increase.

Hyperspectral systems manufacturing that is vertically integrated – where design, analysis and production of slits, gratings and all the optical and mechanical components can take place under the same roof – is well-positioned to meet this growing market need. Vertical integration enables system designs that snap together, require few parts or alignments, and are minimal in size, weight and cost.

Laser-induced Breakdown Spectroscopy (LIBS)

LIBS Spectroscopy from Ocean Optics

Laser-induced Breakdown Spectroscopy (LIBS)

The LIBS Laser-induced Breakdown Spectrometer is a detection system that permits real-time qualitative measurements of elements in solids, solutions and gases. This broadband, high-resolution system provides spectral analysis across a wide 200-980 nm range at a resolution of -0.1 nm (FWHM).

Near-infrared (NIR) Spectroscopy

NIR Quest+

Near-infrared (NIR) Spectroscopy for Food and Agriculture

As population growth and limited arable land have strained the capacity to produce enough food, experts have stepped up efforts to explore and refine technical solutions that improve food production, quality and safety. In this application note, we describe how one such technology — NIR spectroscopy — helps to deliver objective data the food and agriculture industries are using to maximize quality and efficiency.

Frequently Asked Questions About Using Spectroscopy For Plasma Monitoring In Singapore

What Is The Purpose Of Spectroscopy?

Spectroscopy is the study of molecules and atoms and their structures through the analysing of emitted electromagnetic radiation.

Where Is Spectroscopy Used?

Spectroscopy has several uses in material sciences, chemistry, physics, astronomy, and even in medical sciences via imaging and tissue analysis.

How Does A Spectrometer Work?

Spectrometers are highly advanced and specialised equipment, but they operate under the same basic principle. A slitted screen for light to enter, a diffraction grating to diffract light, and photodetectors to measure the light. In more advanced instruments, it can measure other electromagnetic waves outside the visible spectrum, such as InfraRed and UV.

What Is Plasma Monitoring?

Plasma monitoring is the measurement and observation of the plasma present in the emission spectrum. It can be used in elemental analysis for material identification and other processes involving the use of or resulting in the production of plasma.

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