Customized La3Ga5SiO14 Langasite Wafers For High Power High Repetition Rate All-Solid-State Laser
LGS(La3Ga5SiO14 )is a multifunctional intraocular crystal that can be used as an electro-optic crystal after considering and studying the interaction between electro-optic effect and optical rotation in functional crystals. The LGS electro-optic Q switch passes light along the Z direction of the crystal and applies an electric field along the X direction, which can make full use of the lateral electro-optic effect of the crystal to realize the Q-switch function of the LGS crystal. The electro-optic Q-switch made by LGS is actually a new kind of rotation-electro-optical Q-switch. Because of the effect of optical rotation, it can be used as a practical switch and a good Q-modulation result can be obtained. LGS crystal widens the new direction of exploring and discovering new electro-optic crystals from optically active crystals.
Langasite Wafer, YXIs /0/140/25 | Tolerance | |
Cut, A1 | 138.5° / 140° | ± 0.1° |
Cut, A2 | 26.7° / 25° | ± 0.1° |
Diameter D mm | 100mm | ±0.25mm |
Thickness T.mm | 0.50mm | ±0.03mm |
Reference Flat F1,mm | 32.0mm | ±2.50mm |
Secondary Flat F2, mm | 11.0mm | ±2.00mm |
Front Side | Polished Ra < 1.0 nm | |
Back Side | Lapped, 0.4 um < Ra < 0.6um | |
Flatness | < 10μm | |
Scratches, cracks, contamination, others (dimples, pits. orange peel) | No such defects by visual inspection | |
Chips |
| |
Edge chips | Radial depth < 0.5mm: | |
Edge | Round Ground, C shape |
Point group | 32 |
Space group | P32I |
Resistivity | 4.0×1012Ω/cm-1 |
Thickness | 0.13-0.5mm |
Diameter | 50mm |
Length | 90-100mm |
Melting point | 1470℃ |
Density | 5.67g/cm3 |
Mohs hardness | 5.5 |
Coefficient of thermal expansion | aa=16×10-6/K, ac=4×10-6/K |
Optical damage threshold | 670MV/cm2 |
Crystal cell parameters | a=b=0.8162nm,c=0.5087nm |
Dielectric constant | ε11=18.27 |
ε33=55.26 | |
Electro-optic coefficient | γ11=2.3×10-12m/V |
γ33=1.8×10-12m/V | |
Piezoelectric strain constant(10-12) C / N | d11=6.3 |
d14=-5.4 | |
Phase velocity m / s | 2750~2850 |
Electromechanical coupling coefficient K [%] | 0.28~0.46 |
Coefficient of thermal expansion | α11=5.15×10-6K-1 |
α33=3.65×10-6K-1 |
FAQs:
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.
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.
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.
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.
Acceptance Check