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ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
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Rotation Electro Optical Pockels Crystals Q Switched Crystal 10mm / 40mm Length

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Rotation Electro Optical Pockels Crystals Q Switched Crystal 10mm / 40mm Length

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Brand Name : Crystro

Model Number : CR20200107-7

Certification : SGS

Place of Origin : China

MOQ : 1pc

Price : Negotiable

Payment Terms : T/T, Western Union, MoneyGram, Paypal

Supply Ability : 2000pcs per month

Delivery Time : 2-4 weeks

Packaging Details : Transparent clean box

Type : Blank

Polish : 10/5

Diameter : 20mm/50mm/60mm

Length : 10mm/40mm/60mm

certification : SGS

model : CR20200107-7

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Piezoelectric Langasite La3Ga5SiO14 (LGS) Crystal Can be Customized

Langasite crystal (La3Ga5SiO14,LGS), belonging to the space group P321, point group 32, has been reported to be promising new piezoelectric materials for fabrication of surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices. The devices made of langasite crystal could be used at a high temperature up to 900℃ because of its high thermal stability.

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 un unparalleled Q-factor.

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
Point group 32
Airborne group P32I
specific resistance 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
Thermal expansion coefficient aa=16×10-6/K, ac=4×10-6/K
Photo damage threshold 670MV/cm2
Cell Parameters a=b=0.8162nm,c=0.5087nm
Dielectric constant ε11=18.27
ε33=55.26
Electro-optical coefficients 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
Solubility None
Coefficient of thermal expansion α11=5.15×10-6K-1
α33=3.65×10-6K-1

Features:

  • High damage threshold

  • Good optical rotation

  • Can withstand high and low temperature changes

  • Stable physical and chemical properties

  • High electromechanical coupling coefficient (3 times of quartz)

  • Low equivalent series resistance

Applications:

  • electro-optic Q-switch

  • SAW device

  • BAW device

  • Sensor

  • High power high repetition rate all solid state laser

  • High and low temperature change laser


Product Tags:

pockels cell modulator

      

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Rotation Electro Optical Crystals

      
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