Sensors & Detectors

SENSORS & DETECTORS CASE STUDIES AND WHITE PAPERS

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...
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.  Continue Reading...
Single Photon Counting - A Comparison Between Two Types Of Technology
Single Photon Counting - A Comparison Between Two Types Of Technology Photon counting applications play an important role in advancements in many different areas such as astronomy, particle sizing, disease diagnosis, medical analysis and imaging methods as well as the most recent area of quantum cryptography.  Continue Reading...
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SENSORS & DETECTORS PRODUCTS

Tailored Solutions For Optimal Sensors Tailored Solutions For Optimal Sensors

First Sensor provides a continuous tailored process for assisting customers in finding the optimum sensor solutions for standard sensors, modifications thereof, or a custom development. This process begins with the analyzation of the customers’ specific task, and then moves to the creation of a plan, and the development and management of the entire sensor solution.

Avalanche Photodiodes (APDs) With Enhanced NIR sensitivity Up To 950nm: Series 9.5 Avalanche Photodiodes (APDs) With Enhanced NIR sensitivity Up To 950nm: Series 9.5

First Sensor’s new Series 9.5 of avalanche photodiodes (APDs) are designed with an increased sensitivity in the near infrared (NIR) wavelength range up to 950 nm. Due to their fast rise time and very low dark current, these ADPs are ideal for applications with low light intensities and high modulation frequencies such as laser range-finding and laser scanning. Other applications for the photodiodes include safety scanners, 3D-mapping, environmental monitoring, high resolution LIDAR systems for autonomous driving, as well as high speed photometry, and fiber optical communication.

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.

PixelSensor™ Multispectral Sensor PixelSensor™ Multispectral Sensor

Multispectral photodiodes by PIXELTEQ benefit from a micro-patterned optical filter technology that shrinks spectral sensors into a 45.72 mm x 21.34 mm footprint. The new PixelSensor from PIXELTEQ is partnered with a new OEM electronics board, and offers a cost-effective alternative to traditional sensor technology. This device is designed for simple integration into customers’ analytical equipment, providing a faster time to market.

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.

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SENSORS & DETECTORS NEWS

  • Doubled Sensitivity Could Allow Gravitational Wave Detectors To Reach Deeper Into Space
    Doubled Sensitivity Could Allow Gravitational Wave Detectors To Reach Deeper Into Space

    Researchers from the Massachusetts Institute of Technology (MIT) and Australian National University have developed new technology that aims to make the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) even more sensitive to faint ripples in space-time called gravitational waves.

  • Excelitas Technologies To Display Latest Innovations At Sensors Expo 2016

    Excelitas Technologies® Corp., a global technology leader delivering innovative, customized photonic solutions, will display its latest innovations in sensing and detection technology at the 2016 Sensors Expo & Conference in San Jose, CA. Among the products on display in Excelitas’ exhibit (Booth #1121) are the Next-Generation Low-Power DigiPyro® Motion, the Surface Mount 905 nm Pulsed Semiconductor Laser (SMD Laser), and the C30737 Silicon Avalanche Photo.

  • Stirling Cooled MWIR Imaging Core Enables Long Range Monitoring In Security Applications

    Xenics has recently introduced the fourth member of its high-resolution 'XenicsCores' Infrared OEM product family. The new Stirling-cooled XCO-640 MWIR module provides unprecedented thermal imaging stability and optical performance for perimeter surveillance, law enforcement and homeland security. At Eurosatory Xenics will exhibit in booth # FE288 in Hall 06 at the Belgium pavilion hosted by BSDI (Belgium Security & Defence Industry).

  • Series 9.5 APDs With Enhanced NIR Sensitivity  Up To 950 nm
    Series 9.5 APDs With Enhanced NIR Sensitivity Up To 950 nm

    The new Series 9.5 avalanche photodiodes from First Sensor feature an increased sensitivity in the near infrared (NIR) wavelength range up to 950 nm. Due to its fast rise time and very low dark current the photodiodes are ideal for applications with low light intensities and high modulation frequencies such as laser rangefinding and laser scanning. The slow increase of the amplification with the applied reverse bias voltage of the Series 9.5 allows for easy and precise adjustments of high gain factors.

  • Tailored Solutions From First Sensor
    Tailored Solutions From First Sensor

    First Sensor offers its customers a continuous process in order to realize their optimum sensor solution - from the initial idea to the finished product. Tailored Solutions means for us: we analyze the specific task of the customer, plan, develop and manage its entire sensor solution. This may consist of a standard sensor, a modification thereof or a custom development. First Sensor has many years of application and technology experience as a strategic partner in international development projects in industrial, medical and mobility markets.

  • Excelitas Technologies Launches New Low-Power DigiPyro Motion Detectors
    Excelitas Technologies Launches New Low-Power DigiPyro Motion Detectors

    Excelitas Technologies® Corp. recently introduced the next-generation, digital pyrodetection technology in its new, low-power DigiPyro® PYD 1500 Series for battery-operated motion detection. DigiPyro PYD 1500 Series detectors improve detection range and sensitivity at only 1.8V to address the growing demand for enhanced performance and functionality with reduced supply voltage requirements.

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SENSORS & DETECTORS VIDEOS

  • Achieving HD, Full Color Video In Low Light
    Achieving HD, Full Color Video In Low Light

    On the last day of SPIE’s 2016 DCS exhibition in Baltimore, Kevin Fogarty with Canon showed us a 19 micron pixel pitch sensor that can achieve a full color and high definition image in extremely low light environments.

  • How To Specify Optical Coatings For Sensor Applications
    How To Specify Optical Coatings For Sensor Applications

    This year at SPIE’s DCS exhibition, Donna with DSI gave us a quick on-location hello from the show floor before turning it over to principle investigator Kevin Gibbons so that he could offer some advice on what you should consider before determining an optical coating’s specifications for sensing applications.

  • 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.

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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.