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Fixed Ratio Beam Expanders

Fixed Ratio Beam Expanders

Available wavelength range

266 – 2000 nm

Typical expansions

From 1.1x to 10x

Lens material

UVFS

Transmitted wavefront distortion, P-V

<λ/4 @ 632.8 nm

Overall transmission

>98%

Mounting thread

SM1

LIDT

>10 J/cm2 @ 1064 nm, 10 ns, 10 Hz

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Fixed ratio beam expander is a device dedicated to increase a diameter of a laser beam.

Altechna’s beam expanders are assembled using one diverging and one converging lens. As there is no focal point inside the beam expander, it can be used for high powers. Special treatment of lenses and mechanics is performed for UV application to improve lifetime and LIDT of the expander. Standard magnifications are from 1.1x to 10x. Beam expanders for any wavelengths between 266 – 2000 nm are available upon request.

Typical Items for Fixed Ratio Beam Expanders
Wavelength, nm Expansion Input aperture, mm Exit aperture, mm Housing dimensions, mm Product ID
343-355 1.2X 10 12 Ø30 x 56.6 FBE-1.2x-0343-0355
1.5X 8.5 12.75 Ø30 x 55.7 FBE-1.5x-0343-0355
2X 5 10 Ø30 x 58.1 FBE-2x-0343-0355
2.5X 5 12.5 Ø30 x 79.4 FBE-2.5x-0343-0355
3X 5 15 Ø30 x 56.6 FBE-3x-0343-0355
4X 4 16 Ø30 x 80.1 FBE-4x-0343-0355
5X 3 15 Ø30 x 85.1 FBE-5x-0343-0355
515-532 1.2X 10 12 Ø30 x 58.2 FBE-1.2x-0515-0532
1.5X 9 13.5 Ø30 x 57.3 FBE-1.5x-0515-0532
2X 6 12 Ø30 x 59.6 FBE-2x-0515-0532
2.5X 6 15 Ø30 x 78.8 FBE-2.5x-0515-0532
3X 4.5 15 Ø30 x 58.2 FBE-3x-0515-0532
4X 4 16 Ø30 x 81.7 FBE-4x-0515-0532
5X 3 15 Ø30 x 87.6 FBE-5x-0515-0532
1020-1070 1.2X 10 12 Ø30 x 59.4 FBE-1.2x-1030-1064
1.5X 10 15 Ø30 x 58.4 FBE-1.5x-1030-1064
2X 6 12 Ø30 x 60.8 FBE-2x-1030-1064
2.5X 6 15 Ø30 x 80.6 FBE-2.5x-1030-1064
3X 5 15 Ø30 x 59.4 FBE-3x-1030-1064
4X 4.5 18 Ø30 x 82.9 FBE-4x-1030-1064
5X 3.5 17.5 Ø30 x 87.5 FBE-5x-1030-1064

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