2D DETECTOR – InGaAs photodiode arrays
There are two types of detector available:
conventional type
open window type
InGaAs array detector is packaged in metal form and is composed of:
P-I-N structure InGaAs photosensitive chip
thermoelectric cooler (TEC)
low noise readout circuit (ROIC)
אנחנו משווקים בישראל גלאים ופוטודיודות מסוגים שונים ולמטרות שונות. אתם מוזמנים ליצור עינמו קשר לקבלת פרטים נוספים, ייעוץ והצעת מחיר
התקשרו עוד היום
נשמח לשוחח עימכם
Specs for example:
640×512 InGaAs array detector
Specifications
| Names of Index | Typ |
| Response spectrum (μm)*1 | 0.95 ±0.05~1.7 ±0.05 |
| Pixel filling rate(%) | 100 |
| Peak quantum efficiency(%) | ≥70@1.55μm |
| Peak detection rate*2(cm·Hz/w) | ≥5 × 1012 |
| Peak sensitivity(A/W) | ≥0.8 |
| Effective pixel rate(%)*3 | >99.5 |
| Response heterogeneity(%) | ≤5 |
| Playback mode | IWR 、ITR 、ITR+CDS 、NDRO 、IMRO |
| Readout rate (MHz) | Range 2 to 22, typical 12 |
| Number of readout channels | 2 、4 、8，optional |
| Full frame rate(Hz) *4 | 350 |
| Gain gear | 3 |
| Conversion gain(μV/e-) | 1 (LG) 、25 (MG) 、110 (HG) |
| Dynamic range(dB) | ≥55 (MG) |
*1 Focal plane temperature=25℃
*2 Focal plane temperature=20℃ ,Mid-range gain, integration time 8ms, signal amplitude close to half-well condition
*3 The percentage of pixels for which the response signal deviates less than 50% from the mean for the near-half-well condition
*4 The number of readout channels =8, the readout mode is IWR, and the readout rate is 20MHz.
Tags: 2D DETECTOR – InGaAs photodiode arrays, InGaAs 2D detector, InGaAs camera, InGaAs focal plane array, InGaAs imaging, InGaAs infrared detector., InGaAs photodiode array, InGaAs sensor, InGaAs SWIR detector, גלאי InGaAs דו-ממדי, גלאי אינפרא אדום InGaAs., חיישן InGaAs, מערך פוטודיודות InGaAs, מצלמת InGaAs
1024×512 InGaAs area array detector
Key Parameter
Main Parameters of Detector
| Indicator Name | Typical Value |
| Response spectrum range (μm)*1 | 0.95 ±0.05～1.65±0.05 |
| Pixel filling rate (%) | 100 |
| Effective pixel rate (%)*2, 3 | ≤99.5 |
| Noise electron number (e-)*3 | ≤240 |
| Dark current (nA/cm2)*1 | |
| Dynamic range (dB) *1 | |
| Voltage conversion gain(μV/e-) | ≤10 |
| Saturation output voltage(V) | ≥55 |
| Response non-uniformity (%)*3 | ≤5% |
| Peak quantum efficiency (%) | ≥70% |
| Readout mode | IWR、ITR |
| Number of output channels | 8 |
| Maximum readout rate (MHz) | 20 |
| Maximum full frame rate (Hz) | 250 |
| Output mode | Support row selection |
*1 Focal plane chip temperature = 25°C
*2 Percentage of pixels whose response signal deviates less than 50% from the mean value under conditions near the optical signal half-trap
*3 Test conditions: chip temperature = 25°C, high gain, integration time 11.2ms, ITR mode
Here are 10 products similar to an InGaAs photodiode array that are in top demand today:
Cooled Infrared Detector Arrays
These detectors are the high-performance gold standard, but require cooling to cryogenic temperatures (e.g., using liquid nitrogen or a Stirling cooler) to reduce thermal noise.
- HgCdTe (MCT) Detector Arrays: Mercury Cadmium Telluride is the most versatile infrared detector material, as its bandgap can be tuned to be sensitive in the SWIR, MWIR (mid-wave infrared, 3-5 µm), and LWIR (long-wave infrared, 8-12 µm) ranges. High-resolution MCT arrays are in top demand for military, aerospace, and high-end scientific applications.
- InSb (Indium Antimonide) Detector Arrays: InSb is a classic material for MWIR imaging. It offers high quantum efficiency and excellent performance, making it a popular choice for high-end thermal cameras used in surveillance and target acquisition.
Uncooled Infrared Detector Arrays
These detectors do not require cryogenic cooling, making them more compact, more affordable, and easier to integrate into commercial products.
- Microbolometer Arrays (Amorphous Silicon or Vanadium Oxide): These are the most common type of uncooled thermal detector. They measure a scene by detecting changes in temperature, and are the core technology for most commercial thermal cameras used in firefighting, building inspections, and automotive night vision. Their low cost and portability make them a dominant force in the market.
Emerging & Specialized Detector Arrays
- Quantum Dot (QD) Photodiode Arrays: Quantum dots are semiconductor nanocrystals whose absorption wavelength can be tuned by changing their size. This technology is emerging as a more cost-effective alternative to InGaAs for SWIR imaging, with the potential for higher resolution and low-cost manufacturing.
- Type-II Superlattice (T2SL) Arrays: These are advanced detectors based on a repeating nanostructure of different materials. They are gaining popularity as a high-performance alternative to MCT for MWIR and LWIR applications, as they can be manufactured with more uniformity and a lower cost.
Other High-Performance 2D Arrays
- Scientific CMOS (sCMOS) Sensors: sCMOS sensors are the modern standard for high-performance imaging in the visible and near-infrared (NIR) spectrum (up to ~1 µm). They offer a combination of high resolution, fast frame rates, and very low read noise, making them the detector of choice for scientific microscopy and machine vision.
- Single-Photon Avalanche Diode (SPAD) Arrays: SPADs are specialized detectors capable of counting individual photons. 2D arrays of SPADs are in top demand for applications that require extreme sensitivity and precise timing, such as in LiDAR for autonomous vehicles and in biomedical imaging.
- CCD (Charge-Coupled Device) Arrays: While largely replaced by CMOS in consumer electronics, high-end scientific CCDs are still in high demand for applications that require the lowest possible noise and the highest quantum efficiency, such as in astronomy and certain types of spectroscopy.
Related Single-Pixel Detectors
- InGaAs Avalanche Photodiodes (APDs): APDs are a type of photodiode with internal gain, allowing them to detect very weak light signals. InGaAs APDs are in high demand for telecommunications and LiDAR, where their high sensitivity and high-speed response are critical.
- PbS (Lead Sulfide) and PbSe (Lead Selenide) Detectors: These are legacy materials for SWIR and MWIR detection. While typically single-pixel or linear arrays, they are still in demand for simple, low-cost gas sensing and flame detection applications.
LD-PD