Comprehensive cathodoluminescence detection

Perform a comprehensive analysis of your material of interest at the nanoscale with the SPARC Spectral CL detector. Gain valuable insights into material composition, crystal structure, optical modes, and band gap energy. Detect trace elements and dopants, or improve the device/material efficiency through nanoscale defect analysis.

Advantages of SPARC Spectral

list-arrow Ensures the best data quality

list-arrow Tailored to your research needs

list-arrow Future-proof and easily upgradeable


Customizable for your research needs

Use up to six different CL imaging modes with the most flexible and modular CL detector on the market, including fast-intensity imaging, angle-resolved imaging, and CL spectroscopy to meet your research needs. Additionally, you can gain further insights into dynamical processes in materials by performing time-resolved CL. 


Sensitive and efficient CL detection

Experience the best data quality with the SPARC Spectral, ensured by its broad spectral range, unsurpassed sensitivity, and high-quality parabolic mirror. The SPARC Spectral is easily retrofitted to your SEM and compatible with SEMs from all the major brands.


Easy-to-use software

The SPARC Spectral comes with ODEMIS, our powerful open-source software with a multitude of imaging modes, as well as data visualization and analysis. The free software ensures user-friendly acquisition and data analysis, allows scripting, and provides updates and new features free of cost, helping you answer your unique research questions. 

Imaging modes

Find your ideal configuration


Fast-intensity imaging

list-check--neutral-dark The fastest and simplest method to obtain CL contrast

list-check--neutral-dark Fast scanning of large sample areas with high resolution

list-check--neutral-dark Identify regions of interest for more in-depth CL studies

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Angle-resolved imaging

list-check--neutral-dark Understand more about the direction in which light is emitted

list-check--neutral-dark Observe the performance of antenna structures

list-check--neutral-dark Gain insight into the band structure of periodic systems

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Hyperspectral imaging

list-check--neutral-dark Gain insight into the wavelength distribution of CL emission

list-check--neutral-dark Obtain valuable information on the local optical and structural properties of the material

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Polarimetry and polarization filtered spectroscopy

list-check--neutral-dark Gain key insights into light-matter interactions of your material

list-check--neutral-dark Lock spurious background radiation and correct for aberrating effects in the collection optics

list-check--neutral-dark Combine with angle-resolved imaging for ideal studying of polarization effects

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Lens-scanning energy-momentum imaging

list-check--neutral-dark Combine "conventional" angle-resolved and hyperspectral CL imaging

list-check--neutral-dark Characterize optical properties of (nano)materials in energy and momentum space in great detail

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Imaging results

Imaging with SPARC Spectral


Sedimentary rocks

RGB CL intensity image of a quartz sandstone. The CL reveals different quartz grains, overgrowth and intragranular features such as cracks. Scalebar: 50 μm. Image courtesy of Dr. B. G. Haile (University of Oslo)


RGB CL-intensity map of a U-rich zircon surrounded by radiation-damaged quartz. Scalebar: 100 μm. Image courtesy of Dr. Ryan McAleer (USGS)

Photovoltaic materials

SEM (left) CL intensity (right) images of a 3D methyl-ammonium lead chloride perovskite structure. Scalebar: 10 μm. Images courtesy of the Noorduin Lab (AMOLF).


Angular profiles from an elliptical bullseye antenna. Image courtesy of T. Coenen, et al., PhD, Delmic & AMOLF, The Netherlands.

Time-resolved CL

g(2) CL mapping on a set of InGaN nanorods. Image courtesy of S. Meuret (AMOLF)

2D Materials

2D CL map showing interference of exciton polariton radiation and transition radiation. The CL image is overlaid with the corresponding SEM image of the 95 nm thick WSe2 flake. Scalebar: 500 nm. Image courtesy of M. Taleb and N. Talebi (Kiel university). 

Interested to learn more on CL imaging for sedimentary rocks?
Interested to learn more on CL imaging for zircons?
Interested to learn more on CL imaging for PV materials?
Interested to learn more on CL for nanophotonics?
Interested to learn more on time-resolved cathodoluminescence?


Reach out to our team of specialists to find out how our solutions can help you advance your research towards a next breakthrough.


Trusted by researchers in the field


“I ultimately chose Delmic because the Delmic system is modular: One can purchase and update the system incrementally.”

Prof. Nahid Talebi Kiel University

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"The SPARC system is an elegant way to extend the microscopic analysis we perform using other methods."

Priv.-Doz. Dr. Daniel Abou-Ras Helmholtz-Zentrum Berlin

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"It was very reassuring to know that the SPARC system was developed by a trusted and esteemed colleague in our field, rather than being some general-purpose solution in material science."

Dr. Saskia Fielder University of Southern Denmark, SDU

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"Delmic has developed an integrated solution and provided excellent one-to-one support which has been of help to our research."

Dr. Ruggero Verre Chalmers University of Technology

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Supporting the field

Company Logo - Oslo University
Company Logo - AMOLF
Company Logo - Kiel University
Company Logo - Utrecht University
Company Logo - Empa
Company Logo - Chalmers
Company Logo - Monash
Company Logo - Kings College London
Company Logo - SiNAN Institute
Company Logo - Helmholtz Zentrum Berlin
Company Logo - CrayoNano
Company Logo - USGS
Company Logo - Universite de Reims
Company Logo - Xidian University
Company Logo - SDU
Company Logo - Braunschweig University
Company Logo - Raxium
Company Logo - PKU
Company Logo - UTS
Company Logo - MPI Eisenforschung

Application areas

What can SPARC Spectral do for you?




Brochure System specifications

Perform complete materials analysis at the nanoscale

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Technical note Modularity

Optical Modules in the SPARC Cathodoluminescence System

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Blog Cathodoluminescence

What are the benefits of SEM-based cathodoluminescence?

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Blog Nanophotonics

Nanophotonics insights: disentangling the CL spectrum

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Blog Geology

Germanium recovery: why unexpected behavior in mine waste could help geologists

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