Sensors & Detectors

SENSORS & DETECTORS CASE STUDIES AND WHITE PAPERS

LDE/LME Series – Superior Immunity To Humidity This application note experimentally compares LDE/LME differential pressure (Δp) sensors from First Sensor other sensors that use the same (thermal-anemometer-based, non-membrane) sensing principle.  Continue Reading...
LDE/LME Series – Superior Immunity To Dust This application note experimentally compares LDE/LME differential pressure (Δp) sensors from First Sensor other sensors that use the same (thermal-anemometer-based, non-membrane) sensing principle.  Continue Reading...
Frequency Comb Research Advances Using Tunable Diode Lasers
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...  Continue Reading...
Standoff Midwave Infrared Hyperspectral Imaging Of Ship Plumes
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...  Continue Reading...
Airborne Thermal Infrared Hyperspectral Imaging For Mineral Mapping
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.  Continue Reading...
Position Sensitive Detectors This application note provides background information on what position sensitive detectors are, how they’re used, their design, common concerns with their spatial resolution, how they compare to CMOS or CCD image sensors, and how they compare to quadrant photodiodes. The integration of three DL400 Position Sensor Detectors (Or PSDs) into the NuStar X-Ray Satellite is also discussed. For that particular project, the PSDs were used for...  Continue Reading...
Maintenance-Free Hermetic Feedthrough Fiber Pigtailed Electro-Optic Sensor for Rugged Environments
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.  Continue Reading...
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SENSORS & DETECTORS PRODUCTS

Laser Sensors For High Power Lasers Without Water Cooling Laser Sensors For High Power Lasers Without Water Cooling

Ophir Photonics offers a series of thermal laser sensors designed for measuring high pulse laser energies without the need for large, water-cooled devices. The L40(150)A, L40(150)A-LP1, L50(150)A, and L30C-LP1-26-SH use short laser pulses of 0.1 to 1 second to make laser power measurements up to 8000 W or higher.

Ultra-Small MEMS-FPI Spectrum Sensor Ultra-Small MEMS-FPI Spectrum Sensor

Hamamatsu offers the new C13272 ultra-small, narrow range spectrum sensor with a MEMS-FPI tunable filter. It is constructed of a MEMS FPI chip and an InGaAs PIN photodetector with a spectral response range from 1.55 µm to 1.85 µm. This spectral response rate makes the sensor suitable for materials identification and process control in industrial environments.

PowerMax-Pro Sensor PowerMax-Pro Sensor

The PowerMax-Pro Sensor from Coherent is the newest device in sensor technology designed to enhance productivity and quality while improving measurement speed. This sensor features a technological advancement in laser power sensing that combines the response speed of a semiconductor photodiode with the broad wavelength sensitivity, dynamic range, and laser damage resistance of a thermopile.

Solid-State Silicon Photomultipliers (SiPM) For Near-Ultraviolet or Red, Green & Blue Light Detection Solid-State Silicon Photomultipliers (SiPM) For Near-Ultraviolet or Red, Green & Blue Light Detection

First Sensor offers a new series of innovative solid-state silicon photomultipliers (SiPMs) that are designed to detect ultra-low light levels down to single photons. These detectors are optimized for near-ultraviolet (Series SiPM-NUV) or red, green, and blue (Series SiPM-RGB) light detection with peak sensitivities at 420 nm or 550 nm. Key features include a low operating voltage, high gain and low noise, and immunity to magnet fields.

Wide Temperature Range Infrared Emitter: OD-850WHT Wide Temperature Range Infrared Emitter: OD-850WHT

The new OD-850WHT is a wide temperature range infrared (IR) emitter from Opto Diode designed to simplify thermal design for night vision, aircraft, and vehicle light markers for covert operations in military applications. These emitters also have thermal improvements ideal for high temperature industrial photoelectric controls used in petroleum refining, chemical processing, and power generation and other industrial applications.

Laser Doppler Velocity Sensor: PV-01, S-100, & S-150/200 Laser Doppler Velocity Sensor: PV-01, S-100, & S-150/200

The PV-01 from Canon is a compact, high-precision laser Doppler velocimeter with S-100 and S-150Z/200 optical sensors that can measure the velocity and length of moving targets such as items on a conveyer belt,  lopes of  elevator  systems, pipes, cables to be cut at a certain  length, etc.  The PV-01 comes with a free measurement software package to monitor the trend of velocity and analyze data.

CMOS linear image sensor (S11638) CMOS linear image sensor (S11638)

Hamamatsu’s S11638 CMOS linear image sensor has enhanced sensitivity in the UV region, resulting in a wide spectral response range from 200 nm to 1000 nm. It’s an active pixel sensor type and features an amplifier added to each of its 2048 pixels.

IR-Enhanced CCD Image Sensors for Raman Spectroscopy IR-Enhanced CCD Image Sensors for Raman Spectroscopy

Hamamatsu’s S11500-1007 and S11510 series are back-thinned CCDs with improved NIR sensitivity, and they are ideal as detectors in Raman Spectroscopy. Our unique technology in laser processing was used to form a MEMS structure on the back side of the CCD. This improved the CCD’s sensitivity in the NIR region, which is particularly beneficial for detecting long-wavelength Raman emissions.

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SENSORS & DETECTORS NEWS

  • Excelitas Sensors And Custom Delivery Contribute To LIGO Scientific Collaboration To Detect Gravitational Waves

    Excelitas Technologies® Corp. recently announced that its photodiode technology was used in the Laser Interferometer Gravitational-Wave Observatory (LIGO) discovery that recently confirmed yet another prediction of Einstein’s general theory of relativity. The Excelitas YAG-444AH Silicon PIN Photodiode monitored YAG wavelength laser beam quality. The Excelitas’ C30665GH InGaAs PIN Photodiode detected the effect of gravitational waves after they traveled through the interferometers’ 4km-long arms.

  • New Fog Chamber Could Help Improve Optics, Sensing Tech
    New Fog Chamber Could Help Improve Optics, Sensing Tech

    Researchers say the chamber will help develop and validate cameras’ and sensors’ abilities to penetrate fog, knowledge that could lead to improved surveillance at sites. The chamber also could be used to answer fundamental optics questions, which in time could lead to improved security camera lenses and medical imaging equipment, safer aircraft landings and better vision for drivers in fog.

  • Gentec-EO To Launch Handheld, Touch Screen Laser Power Meter
    Gentec-EO To Launch Handheld, Touch Screen Laser Power Meter

    Gentec Electro-Optics, Inc. will show its new Pronto Handheld Laser Power Meter, capable of measurements up to 250 W,  for the first time at the Laser World of Photonics show in Munich in June, and the Pronto-250 and Pronto-250-CO2 will be available for delivery in July 2015.

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SENSORS & DETECTORS VIDEOS

  • Multi-Spectral Imaging And Sensing
    Multi-Spectral Imaging And Sensing

    Marco Snikkers wrapped up our Photonics West 2016 coverage by introducing us to a pixel sensor that acts as an 8-channel spectrometer for biomedical, fluorescence marking, and colorimeter applications, as well as a multi-spectral camera that can monitor specific wavelengths in real-time.

  • First Sensor Extends Products And Capabilities Offerings
    First Sensor Extends Products And Capabilities Offerings

    First Sensor’s Paul Sharman took time out of a busy day one of the exhibition to catch us up on some recent product releases.

  • Lowering Dark Current, Defects, And Bad Pixel Counts In Imaging Detectors
    Lowering Dark Current, Defects, And Bad Pixel Counts In Imaging Detectors

    Sensors Unlimited — UTC Aerospace Systems cut the ribbon on their new facility on September 17th, 2014. Doug Malchow spent a few minutes with us explaining how the move to a bigger and better place has already resulted in better quality imaging detectors with lower defects, lower bad pixel counts, and much lower dark current.

  • Sensors For A Diverse Range Of Applications
    Sensors For A Diverse Range Of Applications

    Jeff Eng, applications engineer with Hamamatsu, shows us a MEMS FTIR engine for IR spectroscopy instruments that works in applications involving gas sensing, materials analysis, and point of care devices. He also introduces us to 2D InGaAs image sensors for thermal imaging monitors, NIR image detection, and foreign object detection; compact radiation detectors; and more.

  • 12 Micron Camera Core And Silicon PIN Quadrant Detector For Sensing Applications
    12 Micron Camera Core And Silicon PIN Quadrant Detector For Sensing Applications

    Excelitas and Qioptiq have joined together to provide custom optics manufacturing and a wide array of sensor offerings for various applications.

  • New Detector For Beam Position Monitoring, UV Scanners, And Inspection Tools
    New Detector For Beam Position Monitoring, UV Scanners, And Inspection Tools

    Opto Diode’s national sales manager Stan Duda kept us up to date on some new developments at Opto Diode. Watch the video to learn more about a new EUV compatible position sensing detector covering the 0.1 nm to 400 nm spectral range.

  • 360 Degree Scanner In Google Car Aided By 32 Element Array
    360 Degree Scanner In Google Car Aided By 32 Element Array

    Paul Sharman, First Sensor vice president of sales and marketing, walked us through the booth to point out some of the more notable displays, and gave us an examples of a real world application in which his company’s products are being used. 

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SENSORS / DETECTORS ABOUT DOCUMENT

LIGHT SENSORS & DETECTORS
A light sensor is a device senses or detects light. Various available kinds of light sensors and detectors function in different ways to give required results.
Active pixel sensors which are image sensors comprises of an integrated circuit with a number of pixel sensors. Each individual pixel has a light sensor as well as an active amplifier.
Charge-coupled devices (CCD)
These are applied in recording of images in astronomy, digital cinematography and digital photography.
Chemical detectors
A silver halide molecule is split into an atom of metallic silver and a halogen atom; the photographic developer causes adjacent molecules to split similarly. An example is a photographic plate.
Cryogenic detectors
They are sensitive enough to measure and determine the energy of single x-ray, visible and infrared photons.
Optical detectors
They are normally quantum devices where individual photons produces a discrete effect when exposed to light. This makes Optical detectors to behave like thermometers by responding solely to the heating effect of the incoming radiation.
Photo resistors or Light Dependent Resistors (LDR)
They change resistance according to light intensity. The light then can be measured or determined by measuring the resistance.
Photovoltaic cells or solar cells
When Illuminated they produce a voltage and supply an electric current. Which means the level of illumination is directly dependent on the amount of light being supplied.
Photomultiplier tubes
They contain a photocathode that emits electrons when illuminated. A chain of diodes then can be used to amplify the electrons.
Photo tubes
These contain a photo cathode which when illuminated emit electrons making the tube to conduct an electric current that is proportional to the light intensity.
Proximity Sensors
Has two photodiode arrays which convert light into current; one photodiode array responds to ambient light and the other responds only to infrared light; when joined with an infrared LED, this second LED array can operate as a proximity sensor.
Ambient Light Sensing Application
Ambient light sensors are incorporated in various laptops as well as cell phones to detect the lighting in the surrounding environment and appropriately adjust the backlight of the screen.