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Coherent launches multi-kilowatt industrial diode laser

21 Apr 2020

HighLight DL HPSi is suited to applications in metal cladding, heat treating, brazing, and welding.

Coherent’s new HighLight DL HPSi is an industrial diode laser that offers high power output (1 kW to 4 kW) in a compact, self-contained package. It is suited to systems integrators and end users performing materials processing such as metal cladding, heat treating, brazing, and welding.

The HighLight DL HPS utilizes an all-in–one configuration; laser head, power supply, water chiller, and heat exchanger are all contained in a single enclosure. The enclosure measures 670 x 1050 x 1760 mm, making it suitable for space-constrained applications, such as are often found in the automotive industry.

Another feature of the HighLight DL HPS is that its conduction-cooled laser diodes enable the closed-loop chiller to utilize distilled water. This allows for easier implementation when compared with products which require the complexity and expense of deionized water, Coherent says.

The HighLight DL HPS is available with numerous factory options and accessories. Its near-IR output is delivered through a detachable delivery fiber terminating in a choice of QBH or QD connector.

Coherent also offers a range of processing heads, including zoom focusing units, which enable the output to be tailored in size, shape, and intensity to the specific requirements of each application. This makes the HighLight DL HPS suitable for a wide range of applications in industries as diverse as oil/gas, agriculture, construction, 3D additive manufacturing, and semiconductor fabrication.

Coherent commented in the product release statement, “Easily integrated into production lines and machines, our fiber-coupled, turn-key diode lasers are available in the kilowatt range. The HighLight DL Series of lasers compact, extremely versatile and can be used for a host of materials processing applications.”

Materials processing

The laser systems are available in four fiber-coupled versions: high quality version (HQ), high-power systems (HP), high-power rack version (HPR), and high-power all-in-one system (HPS). With its smooth and homogeneous beam profile and high efficiency, the HP version is ideal for brazing, cladding, hardening as well as surface treatment applications.

The HPR version up to 4 kW comes along as a compact 19in rack with integrated power supply, fiber coupling and controller for “more comfortable integration”. Available with turn-key or tailored OEM Configurations it is suited to diverse industrial applications.

The HPS System is a platform in which rack type diode laser such as the HPR diode lasers are integrated in combination with a water/air chiller. This All-In-One Laser System with up to 4 kW laser output power offers unmatched convenience and economy for metal processing applications such as cladding, heat treatment, brazing and welding.

For keyhole laser welding as well as brazing and surface treatment with higher beam quality requirements, the HQ version is an ideal tool. The wavelength, close to 1 µm, achieves high absorption in many materials and thus ensures best results.

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