Hamamatsu News 1 / 2018

Hamamatsu has developed a beam-homogenizing optics system as the irradiation unit for the Direct Diode Laser (DDL) L11585 series. Connecting this unit in front of the L11585 series model gives a uniform, no speckle beam pattern. The focused beam size can be varied by changing the aspect ratio conversion unit and condenser lens unit in combination. Differences from conventional products This unit can transform a spiky beam profile into a uniform top-hat beam profile. Features „ „ Uniform beam profile ideal for laser hardening and heat treatment process „ „ Beam pattern for heat input control „ „ Varying beam aspect ratio Application „ „ Metal processing (quenching, cladding), thermal treatment Specifications (when connected to L11585-04) Parameter Value Unit Oscillation mode CW (continuous wave operation) - Light output power 2 kW Oscillation wavelength 940 nm Beam spot size Vertical* 1 2.5 ±0.5 to 25±0.5 mm Horizontal* 1 2.5 ±0.5 to 25±0.5 mm Cooling method Water cooling (deionized water) - Cooling water temperature 25 deg. C. Weight Approx. 15 (excluding cooling water) kg Dimensions (W x H x D) Approx. 906 x 150 x 130 (excluding projecting parts and base) mm *1 By changing the direction of aspect ratio conversion unit, we can vary focusing beam size vertically and horizontally. Ideal for laser hardening applications homogenized beam pattern allows heating in any desired area Irradiation Unit A14132 Series A14132 connected to DDL Beam pattern example 1 mm Data of 5 mm x 5 mm 2 kW output when using a 1:1 aspect ratio conversion unit and an F200 condenser lens Beam lineup 1:1 1:3 1:5 Beam ratio Condenser F100 F120 F160 F200 1:1 2.5 mm x 2.5 mm 3.0 mm x 3.0 mm 4.0 mm x 4.0 mm 5.0 mm x 5.0 mm 1:2 2.5 mm x 5.0 mm 3.0 mm x 6.0 mm 4.0 mm x 8.0 mm 5.0 mm x 10.0 mm 1:3 2.5 mm x 7.5 mm 3.0 mm x 9.0 mm 4.0 mm x 12.0 mm 5.0 mm x 15.0 mm 1:4 2.5 mm x 10.0 mm 3.0 mm x 12.0 mm 4.0 mm x 16.0 mm 5.0 mm x 20.0 mm 1:5 2.5 mm x 12.5 mm 3.0 mm x 15.0 mm 4.0 mm x 20.0 mm 5.0 mm x 25.0 mm News 2018 Vol. 1 11

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