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LGS

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LGS is a kind of multifunctional crystal with excellent properties. The dielectric, elastic and piezoelectric constants of LGS crystal are obviously higher than those of quartz, and the electromechanical coupling coefficient is 2-3 times higher than that of quartz. LGS crystal can be used to manufacture surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices. At the same time, LGS crystal can be used to make electro-optic Q-switch, and the effect is comparable to that of DKDP crystal. The devices made of LGS crystal have high thermal stability.

Chemical formula

La3Ga5SiO14

Crystal structure

Trigonal system

Growth method

Czochralski

Hardness

6.6 Mohs

Density

5.754g/cm3

Melting point

1470℃

Dielectric constant

ε11=18.27ε33=55.26

Coefficient of thermal expansion

α11=5.15x10-6K-1

α33=3.65x10-6K-1

Electromechanical coupling coefficient K (%)

0.28~0.46

Piezoelectric strain constant

d11=6.3;  d14=-5.4

Diameter tolerance

+0/-0.05mm

Length tolerance

+0.1mm

Cutting direction

±0.2°

Parallelism

<30″

Perpendicularity

<15′

Flatness

<λ/10@633nm

Chamfering

<0.1*45°

Surface quality

10/5

Note: Parameters above can be customized as required.


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Contact: John Jay Woo

Phone: +86-13982280204

E-mail: digco(at)digco-techs(dot)com

Whatsapp:+86-13982280204

Add: No.2339,South Secrion of Tianfu Avenue,Tianfu New Area,Chengdu 610213,China