The LDF 200-200, 200 µm fiber-coupled diode laser from Laserline GmbH (Mulheim-Karlich, Germany), offers 200 W for soldering, microwelding, and plastic welding. Spot dimensions of 0.16mm enable processing of fine structures with the diode laser. In combination with a scanner unit, this system is also suitable for quasi-simultaneous welding of plastic materials, for example, electronic housings. Without moving the laser head or the parts to be welded, the entire weld contour is heated simultaneously by passing the beam at high repetition rates.
Parts with weld contours up to 130 x 130 mm2 can be joined with a spot of 0.7 mm or up to 260 x 260 mm2 with a spot of 1.4 mm. Welding is performed in a rapid, non-contact process with minimum internal strains and without damaging embedded electronic components.
The BPS- CO2 beam profiler system from Spiricon Inc. (Logan, UT) provides analysis of CO2 industrial lasers up to 1000 W and beam sizes up to 31 mm (16 mm 1/e2 width). It consists of an AR-coated reflecting wedge, ND filters, beam telescope to reduce larger beams, a Pyrocam III camera, and LBA-Basic software and computer interface card. According to the manufacturer, the product optimizes beams in real time and tunes laser for best performance.
High-speed laser drilling systems from Oxford Lasers (Littleton, MA) are capable of producing dense arrays of holes from 5 to 100 microns diameter at a rate of 250+ holes per second in metals or ceramics, in planar or cylindrical geometries. Applications include micro-filters, catalysts, fuel cells, fuel filters, pressure sensors, MEMS, and other filtration and chemical devices. The systems are based on a modular design.
For applications such as dieboard cutting, converting, complex signage, textile processing, and metal cutting and welding, Synrad Inc. (Mukilteo, WA) offers the Firestar f400 and f201 high-power CO2 lasers. Both systems' footprints are optimized for applications requiring mounting on robotic arms or integration into existing flatbed cutting systems. Features include a robust sealed tube design, RF excitation, and integral gas purge. Enter XX at www.onlinecenter.to/ils
Now a standard feature on TC L 3030 and TC L 4030 laser cutting machines, the pierce control (PCS) systems from TRUMPF (Farmington, CT) continuously monitors and adjusts pierce parameters in real time to reduce pierce time and improve pierce hole quality. The system makes smaller laser cut holes possible and eliminates the pierce dwell times. According to the company, the system is most effective on materials 1/8-inch thick and thicker where shorter pierce times could have a direct, negative affect on pierce quality.
The ultra-low profile of Aerotech Inc.'s (Pittsburgh, PA) ADRS series direct-drive rotary stages reduces the effective working height of the system, minimizing "stack-up" related errors. Additionally, this series provides a clear aperture that can be used for product feed-through or laser-beam delivery. The direct-drive technology is optimized for 24/7 production environments, as there are no brushes to replace and no gear trains or belts to maintain. The slotless stator design eliminates torque ripple. The product is available in 100mm, 150mm, and 200mm versions.
The TRUMPF Inc. (Farmington, CT) VectorMark Workstation 1200 can handle big, heavy parts as well as a large number of parts lying side by side. The system incorporates numerically controlled x- and z-axes to adjust for different workpiece heights and depths. An optional y-axis is available to adjust for different workpiece widths. The laser can mark anywhere on a part's work area of 15.7 inches high x 23.6 inches wide x 15.7 inches deep. All workstations include an integrated fume and particle exhaust system with both a HEPA type particle filter and an activated carbon filter.
Eye-safe wavelength lasers
The DS Series Nd:YLF-based optical parametric oscillator from Photonics Industries International Inc. (Bohemia, NY) incorporates patented frequency conversion technology, which enables it to produce a high-efficiency, high pulse rate laser source at the eye-safe wavelength of 1.516 µm. The laser can operate at 10 kHz in repetition rate and in Q-switched mode. The system produces 3 mJ per pulse at 1 kHz at 1.516 µm. The Nd:YLF laser produces more than 3 watts at 2.5 kHz at 1.516 µm.
Compact UV laser
The DC series diode-pumped UV lasers from Photonics Industries International Inc. (Bohemia, NY) offer a compact, high-efficiency, air-cooled system with typical power consumption of less than 100 watts with output power from 100 mW to greater than 1 watt at 355 nm. According to the company, the series delivers superior TEM00 beam mode quality with M2.
New from LMI Technologies (Southfield, MI), the Big Beam Sensor (BBS) features a large measurement area that provides greater versatility when measuring width and height of solid and opaque targets. A beam height of up to 30 mm (1.18 in) ensures proper measurement for larger targets. Repeatability is better than 0.5 percent at 5 kHz and typical resolution is 0.003 mm (0.00012 in) of the measurement range. Measurement frequency is up to 5 kHz. According to the company, the BBS' functionality, also known as shadow beam measurement, is not affected by target surface color or reflectivity.
Pulsed fiber laser
New from Acculight Corp. (Bothell, WA), Model PF155030—a pulsed laser that generates eye-safe, short pulses of a wide repetition rate range—is suitable for various applications, including micromachining. Based on erbium-doped fiber technology, the product delivers 1.54- micron light output via a singlemode fiber. The device generates nominally 1ns pulses at repetition rates between 100 kHz and 1 MHz. It produces 1 W of average power and 1.2 kW of peak power at 1 MHz. The laser measures 10 x 10 x 4 inches and weighs 15 pounds.
The HPS Series 925 Compact (925C) MicroPirani transducer from MKS Instruments Inc. (Boulder, CO) is a thermal conductivity gauge and incorporates the company's patented MicroPirani sensor technology in a compact package. It features an increased pressure measurement range of from 10-5 Torr to atmosphere. The transducer includes RS-485 or RS-232 digital communications as a standard feature.
Universal Laser Systems Inc. (Scottsdale, AZ) has introduced High Power Density Focusing (HPDF) optics, a new option for the Professional and XL Series laser system lines. HPDF optics reduces the focused spot size, produces finer, more detailed engraving, and increases cutting depth, according to the company. It is interchangeable with the standard lenses included with all Universal Professional or XL laser systems. With this option it is possible to scribe and/or etch directly on some uncoated metals, such as stainless steel, without the use of marking compounds.
Kenametal (Latrobe, PA) offers two new coated insert grades, KC5510 and KC5525, which can double productivity in turning of high-temperature alloys by machining at twice the speed of competitive materials.