Sensors / Detectors Case Studies and White Papers

  1. Practical Considerations For Near-IR LEDs

    This application note provides practical considerations for current driven LED devices.

  2. Frequency Comb Research Advances Using Tunable Diode Lasers

    The discovery of the optical frequency comb and the breakthrough work of Hänsch and Hall in refining the frequency comb technique have revolutionized the field of scientific metrology. In this application note, we will look more closely at how the so-called “microcombs” are generated and what the role of external cavity diode lasers (ECDLs) is in the microcomb generation process. We will briefly discuss how the microcomb is evolving into a compact, versatile tool with increasing application, for example, in the field of molecular spectroscopy. Although still maturing, the field of microcombs has the potential to transform various other disciplines, leading to compact comb generation platforms with numerous applications.

  3. Standoff Midwave Infrared Hyperspectral Imaging Of Ship Plumes

    Characterization of ship plumes is very challenging due to the great variety of ships, fuel, and fuel grades, as well as the extent of a gas plume. In this work, imaging of ship plumes from an operating ferry boat was carried out using standoff midwave (3-5 m) infrared hyperspectral imaging. Quantitative chemical imaging of combustion gases was achieved by fitting a radiative transfer model. Combustion efficiency maps and mass flow rates are presented for carbon monoxide (CO) and carbon dioxide (CO2). The results illustrate how valuable information about the combustion process of a ship engine can be successfully obtained using passive hyperspectral remote sensing imaging.

  4. Airborne Thermal Infrared Hyperspectral Imaging For Mineral Mapping

    In order to illustrate the benefits of thermal infrared hyperspectral imaging (HSI) for mineral mapping, an airborne survey was carried out over an open-pit mine in the Thetford Mines (Qc, Canada) area. The results show how high spectral resolution data facilitates temperature emissivity separation (TES) and atmospheric correction in order to retrieve a thermodynamic temperature map of the area and its associated spectral emissivity datacube. Mineral mapping of various minerals such as lizardite, serpentinite, and quartz was achieved through linear unmixing of the emissivity data using reference emissivity curves found in spectral libraries. The results illustrate the potential of TIR HSI for airborne mapping of silicate minerals.

  5. Maintenance-Free Hermetic Feedthrough Fiber Pigtailed Electro-Optic Sensor for Rugged Environments

    This application note offers a detailed description, features, and more for CMC Electronics’ Hermetic Feedthrough Fiber Pigtailed Electro-Optic Sensor Technology. This electro-optic sensor provides a light and compact solution for applications in harsh environmental conditions that require 100% reliability; such as military and commercial aircraft, oil and gas applications, surface and sub-surface watercraft, and UAV/UAS.

  6. Advantages of Point Source Emitters: Application Note

    A Point Source Emitter is similar to a standard LED, however, its well defined circular area (usually 25μm-200μm in diameter) makes it ideal in applications involving encoders, machine vision, medical fiber, and any other application where a precise beam of light is needed. This application note provides background information on Point Source Emitters, and highlights their advantages over standard LEDs.

  7. Avalanche Photodiode LADAR/LIDAR Receiver Technologies Overview

    Voxtel offers LIDAR receivers and LADAR focal plane arrays optimized for high performance with our novel fast-temporal-response, high gain, low noise InGaAs avalanche photodiode (APD) technology, proven readout integrated circuit (ROIC) designs, and camera electronics expertise.

  8. Remote Sensing Application Note

    Xenics designs and manufactures linear arrays, FPA and cameras for the Short Wavelength range (SWIR), based on InGaAs detectors.

  9. Article: Recent Advances In Laser Warning Systems (LWS)
    The battlefield of yesteryears remains a sad memory for many of us; images of soldiers lying in trenches waiting for the next enemy salvo are unfortunately part of our collective history. By Éric Desfonds, Excelitas Technologies
  10. Single Photon Counting With A Focus On Biomedical Applications

    Over the past few years a growing number of companies have come to rely on Photon Counting for applications that range from particle sizing, atmospheric studies and advanced forms of biomedical research. By Excelitas Technologies