Del Mar Photonics - Newsletter

Customer inquiry:
I need a quotations for the purchase of a BTO crystal whit the following charateristics.
BTO, 7×7×2.5, 110 cut, electrodes on face 2, 532 nm, photorefraction/optical memory

Del Mar Photonics quote

The following item is available for quick delivery

Model   Product Name+   Price   Buy Now 
 CR-BTO-10-10-2.5   BTO crystal, 110-cut, 10x10x2.5 mm   $1,980.00  Buy Now 

 

Bismuth Silicon Oxide ( Bi12SiO20 )
Bismuth Germanium Oxide ( Bi12GeO20 )
Bismuth Titanyl Oxide ( Bi12TiO20 )

Single crystals with the Sillenite structure, Bi12MO20 (M=Si, Ge, Ti) have a fortunate combination of electrooptic, acoustooptic and piezoelectric properties and are thus promising materials for optoelectronics.

The fabrication of sillenite oxide thin-film structures by different techniques permits the development of a long list of devices, including integrated-optics devices.

The strong spectral dependence of the photoconductive properties of these crystals and their electrooptic properties makes it possible to develop a wide variety of devices including spatial light modulators, hologram recording devices, phase conjugation, photorefractive incoherent-to-coherent optical converters.

The relatively large electrooptic effect of sillenite oxide makes them useful also for optical fiber electric field sensors with high thermostability.

Material Properties:

Material

BSO

BGO

BTO

Chemical Formula

Bi12SiO20

Bi12GeO20

Bi12TiO20

Crystal Structure

Crystal System: cubic
Point Group: 23

Lattice Parameters, Å

10.104

10.145

10.175

Density, g/cm3

9.14

9.2

9.2

Mohs Hardness

6

5

5

Melting Point, C

884

925

840

Transparency Range, mm

0.4 - 6

0.4 - 7

0.5 - 6

Refractive Index at l = 0.63 mm

2.54

2.55

2.56

Electrooptical Coefficient r41, pm/V at l = 0.63 mm

5.0

3.5

5.7

Optical activity, deg/mm

at l = 0.5 mm
at l = 0.6 mm
at l = 0.63 mm
at l = 1.0 mm

 

42
25
-
7.5

 

41.5
24
-
-

 

-
-
6.3
2.0

Photoelastic coefficients at l = 0.63 mm

P11
P44

 

0.12
0.04

 

0.13
0.04

 

-
-

Elastic waves velocity, m/sec.

N

100
110

U

100
100

 

3830
1690

 

3650
1680

 

-
-

Dielectric Constant

56

40

46
Dark resistance, Ohm cm

~ 1014

~ 1014

~ 1014

 

Available sizes for polished elements are (3 - 20) x (3 - 20) x (3 - 20) mm3.
Other single crystals with Sillenite structure such as Bi12TiO20 (BTO) and doped Bi12SiO20 (BSO), Bi12GeO20 (BGO) are also available.

Please send us your exact requirements including dimensions, orientation, required dopant concentrations, polishing and coating requirements and quantity.

Most crystals are manufactured according to the customer specifications.

 

We are looking forward to hear from you and help you with your optical and crystal components requirements. Need time to think about it? Drop us a line and we'll send you beautiful Del Mar Photonics mug (or two) so you can have a tea party with your colleagues and discuss your potential needs.

 

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Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics
sales@dmphotonics.com