Dia 50mm Piezoelectric Effect LGS Single Material Custom Angle Direction
Lanthanum gallium silicate ( La2Ga5SiO14 ) is a phenomenal invention. Though langasite was initially developed as a laser crystal, it revealed a remarkable combination of piezoelectric qualities, which opened up new opportunities to use the LGS crystal in radio frequency devices. The main applications of langasite crystals now is SAW filters and SAW resonators. Experts agree that LGS is the best choice for high-efficiency broad band frequency devices because it possesses exceptional frequency-temperature characteristics, a very high index of electromechanical coupling and unparalleled Q-factor.
Crystro's LGS crystal has High thermal stability,low equivalent series resistance ratio and electro-mechanical coupling coefficient is 3-4 times than quartz.
Crystro's LGS wafer is grown by Czochralski method.Max diameter reach 60mm.Crytsro can custom size and cutting direction accordding to customer's needs,Our standard size including LGS Crystal bar: 3x3x20mm,4x4x50mm,5x5x45mm... LGS Crystal wafer: D2inchx0.5mm,D50x0.5mm,40x40x0.5mm...Piezoelectric crystal including LGS,LN,LT,BBO,DKDP are CRYSTRO's main prodcuts..
Anhui Crystro participate in the kinds exhibitions every year: Laser World of Photonics Munich, Shanghai, Photonics West in San Francisco, CIOE in Shenzhen, etc.
Main Properties:
| Crystal Structure | rigonal system, group 33 a= 8.1783 c = 5.1014 |
| Growth Method | Czochralski |
| Hardness | 6.6 Moh's |
| Density | 5.754 g/cm3 |
| Melt Point | 1470 o C ( phase transition point: N/A) |
| Thermal expansion (x10-6/ oC) | α 11: 5.10 α 33: 3.61 |
| Acoustic velocity, SAW | 2400 ( m/sec ) |
| Frequency constant, BAW | 1380 ( kHz/mm ) |
| Piezoelectric coupling | K2 (%) BAW: 2.21 SAW: 0.3 |
| Inclusions | N0 |
Features:
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High damage threshold
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Good optical rotation
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Can withstand high and low temperature changes
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Stable physical and chemical properties
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High electromechanical coupling coefficient (3 times of quartz)
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Low equivalent series resistance
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Applications:
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electro-optic Q-switch
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SAW device
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BAW device
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Sensor
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High power high repetition rate all solid state laser
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High and low temperature change laser
DOCUMENT:
LGS Cryatal.pdf
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Dia 50mm Piezoelectric Effect LGS Crystal Single Material Custom Angle Direction Images
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