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Diffraction gratingexperiment

The Ninox-640 II is a cooled, high sensitivity digital SWIR camera. Using a 640 x 512 InGaAs sensor, the Ninox 640 enables high sensitivity imaging from 0.6µm to 1.7µm.

• ½” Sensor Format | Better for optical design, ideal for OEM integration into Electro-Optic systems. • 10μm x 10μm Pixel Pitch | Compatible with VIS-SWIR illuminators, markers & pointers • <50 Electrons Readout Noise | Enables a high VIS-SWIR detection limit • On-board Automated Gain Control (AGC) | Enables clear video in all light conditions • On-board Intelligent 3-point NUC | Enables highest quality photos

What is diffraction gratingin physics

Omega Optical designs and manufactures exceptional volumes of highly accurate ruled and holographic gratings, wire-grid polarizers and beamsplitters for OEM and reseller markets with our proven design approach and vast library of masters.

What is gratingin Physics

Our foundational technology allows us to create replicated gratings that offer affordable performance and our products cover the spectrum from the vacuum ultraviolet (VUV) to long-wave infrared (LWIR).

Raptor Photonics continues to push the boundaries in scientific SWIR imaging with the launch of the Ninox 640 SU, a vacuum cooled to -80°C InGaAs camera, offering ultra-low dark current for longer exposure times up to 5 minutes. Combining a low read noise of <40e- in high gain and a dark current reading of <300e/p/s at -80°C, the Ninox Ultra is one of the most sensitive SWIR cameras available on the market and perfect for imaging weak signals using longer exposure times. It offers a resolution of 640x512 and has a 15µm x 15µm pixel pitch. The camera also offers a high intra-scene dynamic range of 56dB, enabling simultaneous capture of bright and dark portions of a scene.

Our patented filtered diffraction gratings are a custom solution for OEM applications requiring isolation of the desired spectral band prior to diffraction, and are design limited in doing so prior to the diffraction grating component. Filtering the undesired spectral band prior to diffraction minimizes second order and ray scattering effects, maximizing spectral dynamic range.

Echelle replica gratings are special low period gratings designed for use in high orders only. The maximum possible resolution is obtained but, in general, it is necessary to use a second grating or prism to separate out the overlapping diffracted orders. Echelle replica gratings are an ideal solution for high-resolution spectroscopy due to their high dispersion in high orders.

We manufacture custom gratings to meet specialty needs including: Multi-zone gratings, cylindrical gratings, and concave gratings.

The camera has a readout noise (rms) reading of 30 electrons, enabling a high intra-scene dynamic range for simultaneous capture of bright and dark portions of a scene.

4096 x 3008, 2.74μm pitch CMOS technology: Enables highest resolution imaging from 0.3μm to 1.1μm Latest Generation CMOS technology: Enables ultimate sensitivity similar to II or EMCCD in mono and colour options Ultra compact and rugged: Easy integration into any Electro-Optics platform Global shutter, progressive scan technology: Enables real time, lag-free images at 10Hz full-frame

The Owl 640 A is a variant of the Owl 640 family that offers an analog output. The camera is a rugged, high sensitivity VIS-SWIR camera. Using a 640 x 512 InGaAs sensor from SCD, the Owl 640 A enables high sensitivity imaging from 0.6µm to 1.7µm.

What is gratingconstant

We provide several coating options to tailor reflectivity and efficiency. Protected Aluminum (Al) – Aluminum coat with a thin overcoat of magnesium flouride (MgF2) which prevents the formation of aluminum oxide which is absorbing in deep UV. It provides no benefit over bare aluminum for gratings used in VIS and IR. Gold (Au) – Superior performance over aluminum in the NIR region. Below 600nm the reflectance of gold falls off significantly and is a poor choice. Above 1200nm, gold offers very little advantage for a single pass application.

Dispersion required and efficiency at peak wavelength are often trade-offs. Coarse gratings, for example, generally have higher peak efficiency but lower dispersion.

Omega Optical has a patent-pending deep ultraviolet transmission grating. Formerly the domain of expensive etched fused silica gratings, these economical yet high performance gratings are available for your instrumentation today.

The Owl 640 M variant offers a low compact, low power and cost effective solution to the Owl 640 family. The camera is a TEC-less version of the successful Owl 640. This SWaP (Size, weight and power) design is perfect for integration into small OEM and machine vision scientific platforms.

Diffraction gratingpattern

Using next-generation technology, Raptor has launched one of the lowest noise VIS-SWIR cameras on the market, perfect for imaging in low light conditions. Using a 640 x 512 InGaAs sensor, and the sensor stabilised to 15°C, the Owl 640 N offers a visible response from 0.6µm to 1.7µm to enable a high sensitivity. The camera also offers the lowest readout noise on the market with a typical value of 18 electrons. The camera has a high intra-scene dynamic range of typically 73dB, enabling simultaneous capture of bright and dark portions of a scene.

Using a cooled 1280 x 1024 InGaAs sensor from SCD, the Owl 1280 offers a visible response from 0.6µm to 1.7µm, enabling high sensitivity imaging. The 10µm x 10µm pixel pitch enables the highest resolution imaging. The Owl 1280 has a readout noise (rms) specification of <28 electrons and offers a high intra-scene dynamic range of 51dB, enabling simultaneous capture of bright & dark portions of a scene.

A transmission grating offers a basic simplicity for optical designs that can be beneficial in fixed grating applications such as spectrographs (aka optical spectrometer). The incident light is dispersed on the opposite side of the grating at a fixed angle. Transmission gratings are very forgiving for certain types of grating alignment errors.

Raptor cameras are on LEO satellites revolving at an altitude between 160 to 2,000 kilometers flying at approximately 17,000 mph. Some of our cameras have been operational for over 24 months. We offer LEO camera solutions from UV (180nm) to SWIR (1700nm).

The Owl 640 S is a rugged, high sensitivity digital SWIR camera using a 640 x 512 InGaAs sensor, enabling high-sensitivity imaging from 0.9µm to 1.7µm. The camera is capable of running at higher frame rates, up to 300Hz in full frame resolution, enabling high speed digital video rates.

What is diffraction gratingclass 12

Diffraction gratingformula

Typical holographic diffraction gratings are produced on soda lime and fused silica glass substrates from high quality holographic master gratings and are intended for use in spectrometers and monochromators where cost and low stray light are of primary concern. They exhibit a flatter response due to their sinusoidal groove profile.

• Robust, compact and athermalised structural design for 1U-12U Payloads • Lightweight custom layout and design – Results in reduced launch cost • Extended operating temperature from -40°C to +71°C • Radiation tolerant • Ruggedised connectors – Single 80-pin Samtec connector – other options available • Class 3a manufactured PCBs with solder standard IPC J-STD-001GS • Optional conformal board coatings • Flexi-rigid electronics to fit specific EO space systems • Customized mechanics finished in Surtec 650 • Vented screws where necessary and options for bonding/staking material • Flat front or removable lens mounts • Advanced video enhancement and signal processing features – Optimizing image quality and output in real-time.

Our in-depth knowledge and experience gives us a unique Space Heritage. Our camera cores are SWaP optimised, athermalised and ruggedised to withstand launch conditions and maintain optical performance while being exposed to the extreme operating conditions experienced in the space environment. We offer flight-ready COTS options as well as custom OEM designs.

Using a 1280 x 1024 InGaAs SWIR sensor SCD, the Ninox 1280 offers visible extension from 0.6µm to 1.7µm to enable high sensitivity imaging. The 10µm x 10µm pixel pitch enables the highest resolution imaging. It will offer less than 50 electrons readout noise and achieve one of the lowest dark current readings on the market for a HD resolution SWIR camera. The camera will offer ultra-high intrascene dynamic range of 69dB enabling simultaneous capture of bright & dark portions of a scene.

Using a 640 x 512 InGaAs sensor from SCD, the Owl 640 enables high sensitivity imaging from 0.6µm to 1.7µm. The 15µm x 15µm pixel pitch enables the highest resolution VIS-SWIR image and with less than 50 electrons readout noise, the Owl 640 enables the highest SWIR detection limit.

1944 x 1472, 4.5μm pitch CMOS technology: Enables highest resolution imaging from 0.3μm to 1.1μm Latest Generation CMOS technology: Enables ultimate sensitivity similar to II or EMCCD in mono and colour options Ultra compact and rugged: Easy integration into any Electro-Optics platform Global shutter, progressive scan technology: Enables real time images at 50Hz full-frame

Camera options: • With or without camera housing (Mechanical re-design to customer specification) • Remote heads • Electronic re-design to customer specifications • Flexible voltage supply • Increased resistance to shock, vibrations and temperature (according to the housing specification)

What is gratingelement

Ruled diffraction gratings have a higher peak efficiency than holographic diffraction gratings and a sharper spectral response around their blaze wavelength, due to their “sawtooth” groove profile. Applications like fluorescence excitation, analytical chemistry, life sciences, telecom, physics, education and space sciences – centered around a narrow wavelength range – benefit from a ruled diffraction grating blazed at that wavelength.

816 x 624, 9μm pitch CMOS technology: Enables SVGA resolution imaging from 0.3μm to 1.1μm Latest Generation CMOS technology: Enables ultimate sensitivity similar to II or EMCCD in mono and colour options Ultra compact and rugged: Easy integration into any Electro-Optics platform High QE: >77% @ 510nm: Enables better quality image under low light conditions Global shutter, progressive scan technology: Enables real time, lag-free images at 60Hz full-frame

Original gratings are first-run diffraction gratings where a substrate, likely glass or copper, is polished to a finish better than one-tenth of a wavelength (λ/10) with a high degree of flatness. For ruled diffraction gratings, the surface is then coated with aluminum using vacuum deposition. Photosensitive (photoresist) coating is used for holographic diffraction gratings. The master grating is completed by grooving the surface with either a ruling engine or holographic system.

2848 x 2848, 2.74μm pitch CMOS technology: Enables imaging from 0.2μm to 0.4μm Latest Generation CMOS technology: Enables ultimate sensitivity similar to EMCCD Ultra compact and rugged: Easy integration into any Electro-Optics platform High UV QE: >36% @ 250nm: Enables better quality image under low light conditions Global shutter, progressive scan technology: Enables real time, lag-free images at 15Hz full-frame

• ½” Sensor Format | Better for optical design, ideal for OEM integration into Electro-Optic systems. • 10μm x 10μm Pixel Pitch | Compatible with VIS-SWIR illuminators, markers & pointers • <50 Electrons Readout Noise | Enables highest VIS-SWIR detection limit • On-board Automated Gain Control (AGC) | Enables clear video in all light conditions • On-board Intelligent 3-point NUC | Enables highest quality images

A diffraction grating is an optical component with a periodic structure that splits and diffracts light into several beams traveling in different directions. The directions of the beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element.