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Products / 光学元件 /晶体 /双折射晶体 /BBO /

BBO

Overview Graph Order Now!

α-BBO (alpha-barium borate) is a nonlinear optical crystal that is formed when low temperature phase beta-barium borate is heated to 925 °C. The position of the barium ions is shifted at this temperature. While both phases have excellent birefringence properties and similar physical, thermal, and optical properties, the α phase has centric symmetry and does not have the second order qualities.

α-barium borate is a negative uniaxial crystal with birefringence properties of a wide range of 189nm-3500nm. It is often use for polarizer fabrication, phase retarders, birefringent plates. Time delay compensators, polarizing beam displacers and spontaneous parametric down-conversion.

General Specifications
Material	Alpha-BBO
Dimension Tolerance(mm)	±0.1
Surface Quality	10/5
Flatness	<λ/6@633nm
Wavefront Distortion	λ/8
Parallelism(arcsec)	20
Damage Threshold(pulsed)	500MW/cm² at 532nm

High temperature phase of BaB₂O₄ is an excellent birefringent crystal; it is characterized by large birefringent coefficient and wide transmission window from 189nm to 3500nm, particularly it is suitable to make the

high power UV polarizer, due to its unique UV transparency and good

mechanical properties.

The physical, chemical, thermal and optical properties of a-BBO crystals are similar to those of b -BBO, for instance high optical homogeneity

(better than 1x10-6/cm), extremely low absorption in the UV to IR range (<0.5% from 300-2300nm), low hygroscopic susceptibility and high

damage threshold.

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Dimension (mm)

Search Reset

	Dimension (mm)	Thickness (mm)	Availability	Reference Price (USD)
C-BFC-25(Z)x8-0.5-2.5 Alpha-BBO, Birefringent Crystals, Dimension=25(Z)x8x0.5-2.5mm, AR-coating at 400-800nm	25(Z)x8		2-3 Weeks	Request for quote
C-BFC-CA15-0.4 Alpha-BBO plate, Birefringent Crystals, Dimension=CA15x0.4mm, AR-coating at 800/400nm	CA15	0.4	2-3 Weeks	Request for quote
C-BFC-40-4 Alpha-BBO plate, Birefringent Crystals, Dimension=40x4mm, AR-coating at 400-1000nm	40	4	2-3 Weeks	Request for quote

C-BFC-40-4 - Parameter

Material

Coating

Thickness Tolerance (mm)

±0.1

Surface Quality

10/5

Clear Aperture

>90%

Dimension (mm)

Dimensional Tolerance (mm)

±0.1

Thickness (mm)

Flatness

<λ/6@633nm

Wavefront Distortion

λ/8

Parallelism (arcsec)

<20

C-BFC-CA15-0.4 - Parameter

Material

Coating

Thickness Tolerance (mm)

±0.1

Surface Quality

10/5

Clear Aperture

>90%

Dimension (mm)

CA15

Dimensional Tolerance (mm)

±0.1

Thickness (mm)

0.4

Flatness

<λ/6@633nm

Wavefront Distortion

λ/8

Parallelism (arcsec)

<20

C-BFC-25(Z)x8-0.5-2.5 - Parameter

Material

Coating

Thickness Tolerance (mm)

±0.1

Surface Quality

10/5

Clear Aperture

>90%

Dimension (mm)

25(Z)x8

Dimensional Tolerance (mm)

±0.1

Thickness (mm)

Flatness

<λ/6@633nm

Wavefront Distortion

λ/8

Parallelism (arcsec)

<20

C-BFC-40-4 - Download

C-BFC-CA15-0.4 - Download

C-BFC-25(Z)x8-0.5-2.5 - Download

Accessories

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