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Location: 南阳
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Item: 184788470059
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Type:Diffraction Grating
Brand Name:SRATE
Usage:Infrared
Material:Glass
Shape:Plano
Structure:Ultra-high Linear Density Planar Diffraction Grating
Unbranded:Unbranded
Ultra-high Linear Density Planar Diffraction Grating One Dimensional Holographic Interference Spectrometer Monochromator Grating Ultra-high Linear Density Planar Diffraction Grating Size: 20x20mm Thickness: 2mm Material: Float Glass Wavelength Range: 200nm ~10000nm Holographic grating: The grating made by holographic technology uses the principle of optical coherent superposition. Simply speaking, by adjusting the complex term (time term), the peaks, peaks and valleys of the two optical wave trains are superimposed to achieve a high coherent field. Contrast technology. Process: The optically stable flat glass blank is coated with a layer of photoresist or other photosensitive material with a given thickness. When two coherent beams are generated by the laser to produce a series of uniform interference fringes on the coating, the photosensitive material is photosensitive. Then use special solvent to ablate the photosensitive part, that is, obtain a holographic image of interference fringes on the etched layer. The prepared diffraction grating; if a layer of aluminum reflective film is coated on the back of the glass blank, a reflective diffraction grating can be made. The grating line groove manufactured by this method has high density and large scribing width, and the score line can reach 3663～4234 lines/mm, and the area can reach 165×320mm2. The holographic grating has no ghost lines, and the stray light is small, which can eliminate the inherent shortcomings of the machine-engraved grating. Its actual resolving power can reach 80% to 100% of the theoretical resolving power. Features: a. No ghost line and companion line will be generated during work, which is the most popular among users. b. There are no defects such as microscopic irregularities or burrs that mark the groove of the grating, so the stray light is much smaller than that of the grating. c. The diffraction efficiency is low. The groove shape of the holographic grating is usually an approximate sinusoidal waveform. This groove shape does not have blaze conditions and has no obvious blaze characteristics. It is said that the holographic grating using the “ion etching” technology has greatly improved the diffraction efficiency of the grating. d. High resolution. As the holographic technology greatly increases the total number of grating lines, the dispersion rate and resolution are also greatly improved. e. Appropriately changing the production conditions can produce aberration-free holographic gratings. f. Any size holographic grating can be made. g. Short manufacturing cycle. Delivery details ——————————————————————— 1. We Ship to Worldwide. Please contact with us if didn’t find your country. 2. Items will be shipped within 1-10 business days on payment received. 3. Delivery time depends on destination and other factors, it may takes up to 20 business days. Policy: ——————————————————————— 1. We are not responsible for any custom duty or import tax. 2. We will leave positive feedback after receiving the payment. Please contact us if you are not satisfied with the item after receive it. 3. All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible. 4. Serious Buyer Only! Please place bid only if you agree with all the terms. 5. If you have any problems or concerns whatever with your order or products, please message us and give us a chance to assist you before you leave any feedback. We believe we can produce a positive outcome to any situation and will work hard to earn your praise.
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