A gaduate student in a physics lab requested a quote for the following.
I have a technical question. Do you have spectral data for your Si wafers, specifically ID:452?
We are looking to tune our spectrometer with one of your wafer, but we aren't sure what to expect. If you could share your reflection and absorption data with me, that would
Reference #293229 for specs and pricing.
A PhD professor requested a quote for the following.
Do you have any porous quartz or glass substrates? We need flat surface wafer, better if DSP or at least SSP, thickness 0.5-1 mm, may be round or square 0.5-1” size or larger. We can start from any pore sizes, if they are smaller than 1-2 micron and jjust measure actual numbers.
Reference #90187 for specs and pricing.
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A post doc requested a quote for the following.
The experiments we are running involves light interferometry between two quartz surfaces. More specifically: we take two quartz crystals (with either X-, Y-, Z- or AT-cuts), coat the back side of them with a thin layer of gold (we can do the coating at our university) and press the two quartz crystals together (sometimes with a thin layer of various substances between them). Then we shine white light through our system, that is: through the (gold - quartz - (substance) - quart - gold)-system. The light that passes this system is then guided to a spectrometer where we can analyze the resulting light. In order to get good results it is important that the quartz crystals are thin (20 micrometer or less), have polished surfaces (EPI-polished) and are of good quality (no etched channels, just pure SiO2-crystal with specific orientation/cut). In addition, the quartz crystal should preferable be between 5-10 mm in diameter (square works fine too).
Reference #90649 for specs and pricing.
An associate professor of a X-ray spectrometry group requested a quote for the following.
Please provide me with an offer for thin GaN epitaxial wafers (thickness below 1 micron) on different types of substrate (e.g. 6H-SiC or sapphire) with an indication of the substrate diameter and thickness as well as any dopant dose.
For a research activity in x-ray spectrometry I'm most interested in an undoped and rather thin, GaN layer (any thickness 100 nm to 300 nm) deposited on a 2" saphire or SiC substrate.
I have two questions regarding the GaN layer thickness:
Reference #118745 for specs and pricing.
An engineering manager requested a quote for the following.
What sized s diced pieces do you have? Or is a custom dicing service? If its a service, How much do you charge per wafer for the dicing?
Other specs don't matter. I'm trying to get an idea of what it would cost to make 2x2 mirrors. We will need to have them optically coated. So the orientation, and thickness isn't important.
We use them to make tiny mirrors for a patented disposable spectrometer cartridge.
Reference # for specs and pricing.
A Postdoctoral Associate from a Department of Physics and Astronomy department requested the following quote.
Could you please send me the quote for undoped Ge (110) wafers? The largest diameter listed on website is 3 inch, do you have wafers of larger diameter?
I like to explain you our situation - we will use wafers for construct X-ray spectrometer. We will first use one wafer. After that we will know if material works for us.
Reference #266050 for specs and pricing.
A laser plasma accelerator researcher requested a quote for the following.
I am looking for 2", 3" and 4" wafers of HRFZ silicon to use in Fourier-Transform spectrometers in the THz range. Since we are characterizing both long, narrowband THz pulses and short, broadband THz pulses, I would be interested in a variety of thicknesses. However, my first priority is to find a 3" diameter wafer of 5mm (or so) thickness.
Can you please send me a quote on such an optic and perhaps some more information on the range of wafers you can do? Also, I just noticed that you have 100mm silicon carbide wafers of 350um thick. Can you please also quote me one of these? In addition, I would be interested if it were possible to have a thicker piece (3 - 5 mm) and diameter around 3" Finally, I saw you have "Silicon on Sapphire". Can you please tell me more about this product? How thick is the silicon layer?
Reference #293063 for specs and pricing.
A spectrometer is a scientific instrument used to measure and analyze the spectrum of light or other electromagnetic radiation. It separates incoming light or radiation into its component wavelengths (or frequencies) and measures their intensity. This process helps scientists identify the composition, structure, and properties of materials.
There are various types of spectrometers, each designed for different types of radiation and applications:
Spectrometers are widely used in fields like chemistry, physics, astronomy, and engineering for tasks such as identifying unknown substances, measuring concentrations of elements, and studying physical properties of light and materials.
A assistant professor requested a quote for the following.
We need the monocrystalline, stoichiometric SiC wafer (or piece of it) to calibrate in GD-OES spectrometer carbon and silicon lines ratio. The only important factor is stoichiometry.
Reference #135842 for specs and pricing.
A graduate student requested the following.
Question:
My interest is their use as FTIR plates for polymerizing resin systems. What wafers specs do I need?
Answer:
FTIR means "Fourrier Transform Infra Red Spectrometer". It is a designation of an type of instrument used to measure Infra Red Light Transmission through material such as Silicon wafers.
YES wafers #J267 are almost as transparent to IR light, in the near IR range of 1.0 to 6.0um, as the most expensive Silicon wafers. They will have nil light absorption in that range. Of course, like all Silicon, in air, they will reflect considerable amount of light.
| Item | Material | Orient. | Diam (mm) |
Thick (μm) |
Surf. | Resistivity Ωcm |
Comment |
|---|---|---|---|---|---|---|---|
| J267 | p-type Si:B | [100] | 4" | 500 | P/P | 10-20 | SEMI TEST, 2Flats, hard cst, TTV<10µm, Warp/Bow<40µm |
The wafers are Double-side-polished, so they will transmit light and not scatter it like One-side-polished silicon wafers would.
The quality of polish of these wafers is not up to semiconductor standards, they are not "Epi-Ready". But for Optical transmission, especially in the IR range, they are perfectly adequate.
Reference #140115 for specs and pricing.
A PhD candidate requested a qutoe for the following:
Question:
We typically order 300 of "Item # 978: 3" P/B(100) 1-10 ohm-cm SSP 380um PRIME" wafers every few weeks, and so is it possible to get a quote for 100 of the same type of wafer but with 8nm of aluminum oxide deposited on top? Is that small thickness possible and what is the uniformity of thickness over a single wafer surface and from wafer to wafer?
Answer:
If your supplier cannot provide wafers with the 8 nm thick aluminum oxide coating then you could send us the wafers and we could apply the 8 nm thick coating to them using our electron beam evaporation process. I would anticipate that the thickness uniformity would be +/- 1 nm across a single wafer and maybe up to +/- 2 nm from wafer to wafer.
The difficulty would be in accurately measuring that we are getting close to the 8 nm thickness. We would have to do a couple of calibration runs and measure the optical reflection on a UV spectrophotometer in order to confirm that the coating is close to the desired 8 nm thickness. We do not have an ellipsometer to measure the thickness.
An optical engineering student requested a quote for the following.
I am interested in obtaining type JGS1 wafers for use at 257 nm with these specifications. 50.8 mm Dia. .5 mm thick, SSP, 1 Flat 32.5+/-2mm, Top Side Ra<10A, S/D 40/20, fine grind backside. Please let me know if Item ID 3904 is type JGS1 material. I might be able to use that instead. I want them for witness monitor of dielectric films. Measuring with ellipsometry and spectrometry. So the thickness would be an advantage like the back-side grind of the thinner wafer.
The spec of single side polished fused silkica JGS1 and Dia50.8*0.5mm is workable to yoru application, and the initial quotation sheet is as follows:
| quote no. | Surface Finish | Outer Diameter | Thickness | Primary Flat | Material | Brand/Grade |
| U01-230912-1 | SSP | 50.8±0.2mm | 0.50±0.025mm | no flat | Fused Silica | JGS1 |
Reference #277354 for specs and pricing.
A project manager for an NGO requested a quote for the following.
I am a project manager for an NGO, fighting the plastic pollution of the oceans. We are currently designing a spectrometer to identify the plastic types, using the near infrared spectrum. I am looking for an optical window to protect an infrared sensor. I need a material with a very low absorption on the 850-1700nm wavelength band (BK-7, Fused silica, H-K9L…). Regarding the dimensions: Shape : Circular or square Dimensions : between 10 and 25 mm (side or diameter) Thickness : 2 to 3 mm Do you provide a product that could fit my requirements? If yes, I would like to have a quotation.
Reference #271458 for specs and pricing.