High Power Single Mode CW
Dynamic
Beam Lasers.
The Most Advanced Dynamic Beam Shaping capabilities for superior control of keyhole and melt pool.
Civan’s Dynamic Beam Laser (DBL) allows manufacturers to quickly tailor the welding process to the application. With the ability to control beam shape, beam sequence, shape frequency, and focal depth at MHz speeds without any moving parts.
Civan’s disruptive DBL technology facilitates rapid process optimization, eliminating unwanted joining defects such as pores, cracks, and humping. Civan's lasers not only improve joint quality but also offer increased power, increased feed rates, and more efficient production of new, complex, products made of dissimilar materials.
Unlimited Beam Shapes
Create custom beam
shapes with a software
Shape Frequency
Control the speed at which each shape is generated
Shape Sequence
Switch between beam shapes within microseconds
Focus Steering
Shift focus length at 50 MHz without moving parts
New Features Translate Into New Applications.
Design any arbitrary beam shape. Create your own custom beam profile with our easy-to-use software. Construct and upload a new beam shape to the laser within minutes.
Control the beam frequency. The beam shape is created from fast wobble of the beam and can reach frequency as fast as 50MHz.
Create complex beam shapes. Use many beam shapes to create a complex shape that combines static and dynamic movement for supreme control on melt pool.
Fast focus steering. Cutting and welding take on a 3rd dimension by adjusting the focusing depth to easily simulate a Jigsaw effect, especially effective with crack sensitive materials.
Dynamic Beam Lasers
The Theories behind the Technology.
Civan's Lasers are based on Coherent Beam Combining (CBC)
and Optical Phased Array (OPA).
Coherent Beam Combining.
Parallel amplification of a single seed signal allows for coherent recombination, ramping the output power to a degree unobtainable by in-series amplifiers.
Optical Phased Array.
Individually regulating the phase of a 2D output array is the core factor behind arbitrary beam shaping, live beam correction, focus steering and a host of other performance capabilities.
Frequently Asked Questions.
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What kind of laser does Civan Lasers make?Civan Lasers manufactures a 1064 nm wavelength, CW, High Power (7/14/28/100 kW), with the ability of unlimited beam shaping in high frequencies.
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What is an Optical-Phased Array?Optical-Phased Array (OPA) is one method for Coherent Beam Combining (CBC), which involves merging many single-mode laser beams into one larger beam. As each laser emits its own light, there is an overlap in the far field, creating a diffraction pattern. In simple terms, this process allows easy manipulation of the beam shape in real-time. Basically, the laser can be used like a pencil to draw whatever beam shape is needed.
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Why shape frequency is so important?Speed impacts the characteristics of a weld, and a less-than-optimal speed can cause defects such as spatter. Fast frequencies — 50 MHz, for example — create quasi-static shapes and produce completely different results than kHz or Hz frequencies. As with beam shaping, the frequency can be easily changed, enabling quick comparison of various speeds to determine which works best for the particular needs of the material being processed. In some cases, a difference in frequency can be all the change needed to drastically improve a weld.
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How fast beam sequencing is being done?Beam sequencing adds another layer of flexibility. It involves the laser’s ability to make microsecond beam shape changes. This means the laser can be easily programmed to run through a series of different shapes, with specific timing and order, at different speeds and intervals. Ultimately, the beam sequence selected depends on which sequence best meets the goals and objectives of the application. Current solutions are not as flexible, necessitating compromises, such as using the minimum properties required to suit all the materials in a given application. This method is ineffective because the process is not optimized for any of the materials. With beam sequencing, it is possible to easily program the laser to change from one beam shape to the next as it moves through the different layers and the material changes. In this way, the process is optimized for each layer of material.
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What are the direct benefits of Focus Stirring?Standard lasers have a short depth of focus that concentrates the vast majority of their heat on one point. This causes all other areas of the beam to be significantly cooler. This results in an inconsistent weld throughout the depth of the material(s). Single-mode lasers have a larger depth of focus, and Dynamic Beam lasers are single-mode lasers that can also steer the focus. Meaning, you can change the focal position on the Z axis within the material at any time and any speed during the process. Focus steering is especially beneficial when welding thicker materials, allowing for a smoother and more consistent weld, as well as in laser cutting, where it causes less roughness and dross.
