The broadest line of both silicon and InGaAs detectors commercially available.
Indium Gallium Arsenide (InGaAs) PIN photodiodes are made using InGaAs/InP technology.
Cutting-edge silicon photodetectors that excel in precise detection of light ranging in wavelength from 250nm to 1100nm
Monolithic “quads” or quadrant photodiodes (QPDs) are 2 X 2 photodiode arrays with four planar diffused photodiode elements or segments.
Marktech offers a broad line of silicon photo Transistors in a variety of package types ranging from miniature metal can to ceramic packages.
Our High-Reliability Photoreflectors are sensors that contain both the LED emitter and photodetector functions within a single package.
Marktech Si APD’s offer low-level light and short pulse detections of wavelengths between 400 nm and 1100 nm.
UV detectors are offered in a variety of TO metal-can type packages from TO-18 to TO-39 with special UV glass lens to insure optimum lifetime and the least amount of material degradation
With the ability to detect light in the UV, visible, and infrared spectrums, photo detectors, photo transistors, and photodiodes are being used in increasingly more applications.
Marktech offers the broadest range of emitters commercially available ranging from 235nm to 4300nm across the UV, visible, NIR, SWIR, and MWIR spectral ranges.
Marktech offers the broadest range of UV LEDs commercially available ranging from 235nm to 400nm including UVA, UVB, UVC, and deep UVC LEDs.
Our advanced line of visible LED products is engineered to deliver high-quality, energy-efficient lighting solutions across various applications from 400nm to 700nm..
Our NIR LED wavelength range is typically from 700nm to 1000nm, extending into wavelengths invisible to the human eye but crucial for numerous technological and scientific applications.
Our standard product offering includes wavelengths from 1020nm to 4300nm and operating currents ranging from 20mA to 350mA for high-power applications.
Our Point Source LEDs are specifically engineered for optical encoders, edge sensors, and other critical applications that demand highly focused light with minimal dispersion.
Multi-LED chips in a single package, our multiple wavelength LEDs are engineered to address a myriad of applications across the UV, visible, NIR, SWIR, and MWIR spectral ranges
Designed to produce a highly defined red dot or reticle, facilitating accurate aiming without revealing the location to the target.
Ideally suited for applications including edge sensing, line sensing, coin bill validation, and bar code reading
Our panels are crafted to deliver uniform, vibrant illumination across a wide range of applications, from consumer electronics to industrial displays.
Crafted with the latest LED technology, these rings provide adjustable illumination to meet specific needs, ensuring optimal visibility and enhancing the quality of your projects.
As a proud CREE LED Solution Provider for over a decade, Marktech offers comprehensive engineering support, including design, binning, and material selection, alongside custom packaging options for specialized applications.
CREE LED through-hole emitters, designed for high-temperature and moisture environments with UV-resistant optical-grade epoxy, offer a range of colors for versatile applications in signage and lighting.
CREE High Brightness (HB) SMD LEDs are the brightest, most reliable architectural, video, signage, scoreboard, roadway, and specialty LEDs available today.
CREE LED’s P4 series represents a leap in LED design, combining efficiency with aesthetic versatility to meet the demands of modern lighting applications.
Marktech’s CREE LED XLamp® offerings on aluminum core starboards simplify LED integration for designers, providing a range of colors and angles on compact boards for easy testing and implementation in varied lighting applications.
Marktech Optoelectronics introduces its new product line of CREE LED die, including the EZ1350 Series Die, packaged in TO-cans (TO-18 and TO-39 outlines) designed for precision and reliability in demanding applications with protection against environmental factors like moisture and dust.
CREE LED’s Versatile InGaN-based LED chips are designed to meet diverse needs for blue, green, and white-converted LEDs.
Marktech Optoelectronics combines over 40 years of expertise in optoelectronics with a focus on customized engineering solutions, addressing specific customer needs and applications.
Custom photodiode detectors are designed to meet unique customer requirements, offering specialized performance features and cost savings through optimizations such as integrated filters, photodiode arrays, and hybridization.
Through our vertically integrated manufacturing facilities in California and Japan, we offer custom LED solutions, including packaging and optoelectrical categorization, enhancing product design and market readiness.
Multiple LED dies combined in a single package are engineered to address various applications across the UV, visible, NIR, SWIR, and MWIR spectral ranges.
To succeed, you need the exact optoelectronic package custom-designed and manufactured for your application, including hermetic metal SMD, TO-can, plastic SMD, and molded through-hole packaging.
Made-to-order semiconductor chips (die) and wafers are designed and fabricated to fit your needs. Standard dies are available in specific wavelengths for high-volume production applications.
Bare and encapsulated LEDs, photodiodes, and other components are assembled on FR4, metal-cored, and flexible circuit boards, ready for production.
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September 21, 2022 – Latham, NY, USA – Marktech Optoelectronics, Inc. (www.marktechopto.com)(Marktech), a privately-held leading designer and manufacturer of standard and custom optoelectronics, including UV, visible, near-infrared (NIR), and short-wavelength infrared (SWIR) emitters, detectors, InP epi wafers, and other compound semiconductors, today announced their offering of cutting-edge InGaAs quadrant and array photodiodes for laser alignment and position sensing applications.
“Quads” or quadrant photodiodes (QPDs) are segmented photodiode position sensing detectors (PSD, AKA position sensing diodes) with four planar diffused photodiode elements, which are monolithic or on the same silicon or InGaAs chip. Marktech Optoelectronics quad photodiodes have low dark current, high resolution or precision, high accuracy, high response with low noise (high S/N ratio), wide spectral ranges, good frequency bandwidth, excellent dynamic range, minimal element spacing, low operating voltages, high shunt resistance, and large active areas.
Two-segment, dual element, or bi-cell photodiodes are another type of position sensing device commonly incorporated into alignment or positioning systems. While quadrant photodiodes can sense position along two dimensions or the X & Y axes, bi-element photodiodes align or position along one dimension or axis.
Marktech’s four-element photodiode arrays or quad detectors provide flawless performance in laser alignment and nanopositioning applications. Quadrant photodiodes (QPDs) or quadrant position sensitive detectors typically have resolutions as low as 10nm using beams with optical powers from 10 to 100microWatts (Ref 1). Quads can be used in auto-collimators for laser alignment, optical trackers, scanning probe microscopes, stage positioners, surface profilometers, mask aligners, beam centering systems, space sun sensors, ellipsometers, optical tweezers, tilt sensors, high accuracy displacement sensors, and other ultra-precision positioning applications. The fast response and wide operational bandwidth of QPDs have made these positioning devices dominant in the atomic force microscope (AFM) industry (Ref 2). Satellite communication systems can benefit from quadrant photodiodes as well. For example, quadrant photodiodes are critical components in quadrant photoreceiver (QPR) front-end devices for inter-satellite laser interferometry.
InGaAs Photodiode Arrays
Both bi-cell and quadrant photodiodes are photodiode arrays (PDAs) with two (1X2) and four (2X2) elements, respectively. Bi and quad PDs are suitable for alignment or position sensing over a small beam displacement or position range. For laser or light beam position sensing over a more extensive range, longer, multi-element photodiode arrays are necessary. Marktech Optoelectronics can manufacture custom multi-element linear (one dimensional, 1D) and area (two dimensional, 2D) photodiode arrays with many segments for dispersive spectroscopy, refractometry, distance or range finding (triangulation position sensing), interferometry, and particle analyzers. Many photodiode array applications require custom-designed arrays and OEM custom integration, one of Marktech’s industry-leading capabilities. Marktech’s detector experts have designed and manufactured photodiode arrays with 2, 4, 16, 20, 32, 64, and more elements.
Advantages of InGaAs Position Sensitive Detectors
InGaAs quadrant, bi-segment, and multiple segment array position-sensitive detectors have several advantages over imaging sensors (CCD, CMOS, focal plane arrays, etc.), such as high position resolution, fast response time, lower cost, and straightforward signal conditioning circuit designs. In addition, InGaAs linear arrays are employed in pulsed laser or direct time of flight (TOF), phase shift or indirect time of flight (TOF), and triangulation position sensors.
InGaAs positioning sensitive detectors have a further advantage over silicon PSDs in their ability to sense eye-safe laser wavelengths in the NIR and SWIR bands. In addition, specific SWIR wavelengths can “see” or detect through plastics, fog, smoke, or moisture, which is an advantage over visible and NIR PSDs. For example, water is opaque when viewed at specific wavelengths such as 1400nm, so an InGaAs PSD with a 1400nm SWIR LED emitter could sense water levels in a plastic container or tank. In a factory application, InGaAs detectors with 800nm to 2600nm sensitivity should have no or fewer false triggering events from high brightness LED work lights and other stray light sources in the visible band. Detectors with ambient light immunity are beneficial in triangulation position sensing systems and LiDAR devices.
InGaAs Wavelength Sensitivity Range
Our InGaAs quadrant photodiodes and photodiode arrays have a wavelength sensitivity range from 600nm to 2600nm (600nm to 1700nm for our 1.7µm InGaAs PDs and 800nnm to 2600nm for our 2.6 µm InGaAs PDs). Our silicon quadrant photodiodes and photodiode arrays have a wavelength sensitivity range from 250nm to 1100nm. These die can be packaged individually in a variety of hermetically sealed TO packages or integrated into a custom package (PLCC, COB, hermetic SMD, ceramic carrier, etc.) to suit your specific application and pin-out design specs. Marktech has several class 100 cleanrooms for the advanced packaging and assembly of custom InGaAs and silicon photodiode devices on rigid PCBs, flexible circuits, and OEM-specific designs.
Custom silicon quadrant photodiode array made in Marktech’s factory in Simi Valley, CA.
Custom InGaAs Photodiodes and Packaging
Marktech routinely manufactures custom photodetectors to OEM specifications from prototype to production volumes. The range of Marktech’s custom photodetector engineering and manufacturing, including custom InGaAs photodiodes:
Marktech can co-package InGaAs photodiodes with emitters, filters, and transimpedance amplifiers (TIAs). Marktech’s U.S. factory in Simi Valley, CA, has a similar level of competency in producing silicon photodiode detectors. In addition, silicon and InGaAs photodiodes are assembled in the same package for wide spectral band detection applications (MT03-041 TO-39 Metal Can Flat Lens and MT03-047 Ceramic SAW Package).
Marktech Optoelectronics has vertically integrated capabilities to custom design and fabricate InGaAs photodetector and photodiode array devices on wafers and then dice and package these photodiode chips with any required emitters, amplifiers, filters, and components for specific applications. This vertical integration allows Marktech to precisely control the performance and quality of the photodetectors and assemblies designed and manufactured for our customers.
Consult with Us Today About Your Design Project
Using Marktech Optoelectronics advanced InGaAs photodetectors in new products under development will likely lead to breakthrough designs in many analytical instruments, medical diagnostics, and industrial sensing applications.
If you have specific technical or application questions regarding your optoelectronics design project or are just interested in learning more about Marktech’s InGaAs and silicon photodiodes, then please reach out to us through the following:
Marktech Optoelectronics is one of the world’s leading manufacturers of UV, visible, near-infrared (NIR), and short-wavelength infrared (SWIR) emitters and photodiode detectors. The company also engineers and manufactures materials such as silicon photodetector wafers, chips, and InP epiwafers.
Marktech Optoelectronics
3 Northway Lane North
Latham, NY 12110
Fax: +1-785-4725
Email: [email protected]
