Ultra Thin Lithium Tantalate Crystal As Sensitive Layer In Pyroelectric Infrared Detector
Lithium tantalite (LiTaO3) presents unique electrooptical, acoustic, piezoelectric, pyroelectric and non-linear optical properties, making it a suitable material for applications in pyroelectric infrared detector. The z-cut single crystal LiTaO3 shows more advantages as a new type of optical material than other traditional optical substrate materials, such as large pyroelectric coefficient, small dielectric constant, high curie temperature and uniformity of crystallinity.
The scratch on crystal surface would affect the absorption coefficient of the wafer, the noise equivalent power value (NEP) and voltage responsivity Rv of the detector.
| Material | 3" 4" 6" 8" LN wafer SAW / Optical | 3" 4" 6" LT wafer SAW / Optical |
| Orientation | X/Z/Y41°/Y64°/Y128°/YZ/YX or Customized | X112°/Y28°/Y36°/Y42°/YZ or Customized |
| Surface finish | Single Side Polish or Double Sides Polish (DLP/SLP/ SSP/DSP all available ) |
| Thickness | 0.18/0.25/0.35/0.50/1.00 mm | 0.25/0.35/0.50/1.00 mm |
| TTV | < 1~5µm |
| BOW | ± (25µm ~40um ) |
| Warp | <= 35µm |
| LTV (5mmx5mm) | <1.5 um |
| PLTV(<0.5um) | ≥98% (5mm*5mm) with 2mm edge excluded |
| Curie Temp | 1142°C±3°C | 605°C±3°C |
| Edge | Compl't with SEMI M1.2@with GC800# .regular at C typed |
| Orientation flats | available, per request |
| Doped with | Er, MgO Single or Double doped | Fe doped |
| Polished side Ra | Roughness Ra<=5A |
| Back Side Criteria | Roughness Ra:0.5-1.0µm GC#1000 |
| Edge Rounding | Compliant with SEMI M1.2 Standard/refer to IEC62276 |
| Cracks, saw marks, stains | None |
| Single Domain | Completed Polarization / Reduced |
FAQs:
- Q: What are the products you mainly work on?
A: We look at ourselves as the piezo wafer specialist. We are the very first to work with Single Crystal Quartz in China about 30 years ago. Then gradually we step in the field of LiNbO3, LiTaO3, Quartz glass, LGS, CTGS etc. Especially, if you are looking for a piezo quartz supplier, we are the ultimate choice! We export millions of quartz blanks each year because we master the AT, SC and IT cuts with superior angle precision.
- Q: Can you accept product customization?
A: Yes, of course. We can fabricate as per your request. In addition, we are so experienced with piezo wafers that we can provide you relevant suggestions if you are not 100% sure about your choice. Besides, we do have some standard wafers in stock, please check with us.
- Q: Can you deliver the goods via our courier agent?
A: Yes, we would suggest you go with the courier agent you are most familiar with (DHL, FedEX, UPS etc.). We can ship via your account. And, of course, we will pack the products safely in acceptable size to help you save the shipping cost. If you need us to take care of the freight, it’s also not a problem. We also have good discount with the international courier companies.
- Q: How can you guarantee we get what we want safely?
A: The wafer products are fragile and sometimes expensive. The last thing, as the manufacturer, we want to see is the products we make were damaged during courier. As a result, we will pack the wafers adequately and put them in a proper carton filled with buffer sponge. However, accidents are inevitable sometimes. So, please follow the “Acceptance check” steps shown in the drawings below. If the unwanted happened, we will either give the replenishment or refund if you follow the checking steps.
- Q: Can we visit your factory?
A: Sure. Factory inspection is important for large quantity purchase and long-term cooperation. Face to face discussion is what we mostly confident with. During the past years, big names around the world have witnessed our progress in factory build-up. These days, due to the Covid-19 pandemic, we also had the experience of videoconferencing with global buyers.
Acceptance Check
- The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
- After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
- Please open the vacuum package in a clean room when the products are to be applied.
- If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well.
