Description: Ultra-high Linear Density Planar Diffraction Grating One Dimensional Holographic Interference Spectrometer Monochromator Grating Description Feature: 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. Packing List: 1pc Shipping Items are normally shipped within 1-2 working days of receiving (cleared) payment and will be shipped by air parcel to worldwide. We do offer combined shipping discount if you pay all together.The shipping & handling fee includes packing, warehouse and distribution costs, not postage only, these are non- refundable.The estimated shipping time is about 10 to 20 days to arrive buyers' location. All items will only be shipped to the address you registered with PayPal. please make sure yourshipping address on Ebay is correct BEFORE placing your order. Contact Us Your satisfaction is important to us. If you are not satisfied with our products/services, please contact us BEFORE leaving us any neutral or negative feedback. We will try our best to resolve any issue. If you satisfied our items and service, hope you could leave a positive feedback with all stars for me. We are using the automatic eBay Feedback system which would automatically leave positive feedback after receiving positive feedback. You can contact me if you have any questions. Our Business Hours（Beijing）: 8:30A.M.-5:30P.M. Mon-Sat
Price: 42.75 USD
Location: Nanyang
End Time: 2024-02-29T03:06:15.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Return policy details:
Brand: Unbranded
Usage: Infrared
Type: Diffraction Grating
Shape: Plano
Material: Glass
Structure: Ultra-high Linear Density Planar Diffraction Grating
Available Variations
Color: 1000Lines
Price: 42.75 USD
Available Quantity: 6
Quantity Sold: 3
Color: 1200lines
Price: 49.4 USD
Available Quantity: 5
Quantity Sold: 2
Color: 1800lines
Price: 57 USD
Available Quantity: 8
Quantity Sold: 2
