Piezoelectric Crystal Bismuth germanate Bi12GeO20 BGO crystal

Product Overview

Description

Piezoelectric Crystal Bismuth germanate  Bi12GeO20 BGO crystal

Bismuth germanate (Bi12GeO20) has high electro-optic coefficients (3.3 pm/V for Bi12GeO20) making it useful in nonlinear optics for building Pockels cells, and can also be used forphotorefractive devices for ultraviolet range. The Bi12GeO20 crystals are piezoelectric, show strong electro-optical and acousto-optical effects, and find limited use in the field of crystal oscillators and SAW devices. Single crystal rods and fibers can be grown by floating zone process from a rod of mixture of bismuth oxide and germanium oxide.The crystals are transparent and brown colored.

 

 

Feature Piezoelectric Crystal  BGO

High electro-optic coefficients

High acousto-optical effects

Low dark conductivity

 

Piezoelectric Crystal  BGO

Specification	Conventional	High Precision
Materials	BGO(Bi12SiO20)	BGO(Bi12SiO20)
Orientation	<001><110>,< ±0.5°	<001><110>,< ±0.5°
Parallel	30″	10''
Perpendicular	10′	5'
surface Quality	40/20	20/10
Wavefront Distortion	λ/4@632nm	λ/8@632nm
Surface Flatness	λ/4@632nm	λ/8@632nm
Clear Aperture	>90%	>90%
Chamfer	<0.2×45°	<0.2×45°
Thickness/Diameter Tolerance	±0.1 mm	±0.1 mm
Maximum dimensions	dia50x300mm	dia50x300mm

Properties (BGO)	BGO(Bi4Ge3O12)
Type of Material	Single Crystal
Crystal Structure	Cubic
Lattice	a=10.158 Å
Cleavage Planes	No
Transmission Range	0.4-7
Refractive Index	2.55
Optical Absorption	20%
Density	9.2g/cm3
Melting Point	920℃
Molecular Weight	2900.358
Thermal Expansion	7x 10-6 /℃ at 273K
Hardness (Mohs)	5
Dielectric Constant	ε11/ε0= 40
Optical Activity, deg/mm at 500 nm	41.5
Solubility in Water	insoluble in water
Electro-Optic Coefficients	r41=3.5 pm/V
Half-Wave Voltage, DC	5.7

                    Absorption Spectrum of BGO and BSO

 

 

 

 

 

 

 

Q1: Can I have samples to test?

A: Yes,we are pleased to supply samples to test and check quality,mixed sample order is available.

Q2: Do you have any MOQ limited? A: Our MOQ: 1pcs Q3: What’s the lead time?

A: Sample :2-3 days.Mass production: 15-20 days.

Q4:How do you ship the goods and how long does it take?

A: We usually ship goods by UPS,FEDEX,TNT. It usually takes 3-5 days to arrive.

Q5: Do you offer guarantee for your products?

A: After test them if not pass test,you can return the goods at any time, we will re-offer you again and also bear shipping fee.

Q6: Do you accept OEM?

A: We have our own brand-metalaser. OEM is also acceptable.