The Hermes family of diode lasers from Intense Ltd. (Jersey City, NJ/Glasgow, UK; www.intenseco.com) is designed for applications in which high brightness and energy efficiency are necessary, such as fiber-coupled industrial applications, including plastic welding, micro-welding, and soldering. The laser devices are available in multiple wavelengths, including 808 nm, 940 nm, and 980 nm. Available as diodes, bars, and stacks, the lasers are compact, modular units based on the company’s patented Quantum Well Intermixing (QWI) process. Single emitters and bars in conductively cooled packages are available, as well as fiber-coupled packages, micro-channel cooled bars and stacks, and hermetically sealed and/or space qualified packages.
Mitsubishi’s (Wood Dale, IL; www.mitsubishi-world.com) X-Flow Resonator Series features a three-axis, cross-flow design and reportedly requires two to five times less maintenance than previous designs. Compared to traditional fast-axial flow technology, cross-flow technology reduces laser gas consumption down from 30 liters per hour to three liters per hour. Because the beam-on process reaches full power in 45 seconds, the resonator can be shut down between shifts and during breaks, increasing uptime while reducing electricity consumption. Furthermore, the cross-flow technology utilizes one premixed bottle of gas, which eliminates the need for a mixer system and reduces annual gas consumption expenses.
The latest release of Miyachi Unitek’s Laser & Systems Division (Monrovia, CA; www.miyachiunitek.com) laser workstation software provides uniform, standard, validated control over a wide range of industrial laser welding or marking operations. The software utilizes G/M code programming for high post-sale supportability and free software upgrades. This release supports the company’s Delta and LMW workstations and features an integrated user interface that combines laser programming and control, vision inspection, vision directed motion, and motion control programming.
Cutting systems brochures
NTC America Laser Group (Farmington Hills, MI; www.ntclaser.com) offers two four-page, four-color brochures. One details the operating advantages of the TLZ series, its ultra-high-speed three-axis, two-dimensional CO2 laser cutting systems. The other introduces the advanced operational and productivity performance of the TLM series of five-axis, three-dimensional CO2 laser cutting systems.
The picosecond laser Rapid from Lumera Laser (Kaiserslautern, Germany; www.lumer-laser.com) is a tool for microstructuring virtually any material micron resolution in x-y dimensions; the depth of the structure can be machined with nanometer resolution. Each laser pulse removes about a 10nm layer of material without thermal stress to the remaining material. Up to 500,000 pulses per second allow for high efficiency. For example, with a 10W laser up to 1 mm3 of steel can be removed with high precision within one minute.
Dust collector systems from Micro Air Clean Air Systems (Wichita, KS; www.microaironline.com) utilize the Roto-Pulse cartridge cleaning system, which cleans 100 percent of the filter area. Systems can be designed with the capacity to generate 60,000 CFM or more. The modular, bolted-together design results in a heavy-duty system.
Fiber-coupled diode laser bar
A fiber-coupled diode laser module from DILAS (Mainz, Germany; www.DILAS-Inc.com) delivers up to 40W CW output power at wavelengths of 808 nm, 915 nm, 940 nm, and 980 nm via 400μm diameter single-core multimode fiber. Measuring >100 x 31 x 20 mm, this industry-standard package boasts a wall-plug efficiency >35 percent and features a typical spectral width of <3 nm FWHM. The laser power is delivered via the fiber, which is terminated with a standard SMA 905 connector.
With 8kW of power, the TruDisk 8002 from TRUMPF Inc. (Farmington, CT; www.us.trumpf.com) offers high beam quality and efficient performance, according to the company. The wall plug electrical structure increases efficiency up to 25 percent when compared to traditional designs. The modular concept makes it easy for components to be exchanged yielding high reliability. The product is useful for welding difficult tasks on thick sheet metal especially for heavy industry. It reportedly can process nearly any material, including highly reflective materials like copper or aluminum.
An industrial-grade excimer laser, the LAMBDA SX 540 C from Coherent Inc. (Santa Clara, CA; www.Coherent.com) delivers pulse energy up to 0.9 J and pulse repetition rate up to 600 Hz. According to the company, this new laser incorporates all the advantages of the existing LAMBDA SX class as well as several innovations: actively stabilized performance can be achieved at pulse energies between 700 and 900 mJ; burst mode with PowerLok for “power on demand” applications; an all solid-state power supply; and an external resonator design.
The DC2000 dual-axis digital servo driver is the newest member of the Self-tuned Digital State Space servo family from Cambridge Technology (Lexington, MA; www.camtech.com). The DC2000 utilizes a patented model-based algorithm to achieve galvo speeds far beyond what can be achieved with conventional PID servos, according to the company. The product’s direct digital command interface simplifies system integration while back-channel feedback allows the user to digitally monitor servo status in real time to immediately alert the user if a threshold is exceeded. Remote support capability allows system interrogation via the Internet to immediately provide support from any support center to even remote system installations.
For applications including via hole drilling, wafer scribing and dicing, solar cell processing, and materials processing, Newport Corp.’s Spectra-Physics Lasers Division (Irvine, CA; www.spectra-physics.com) offers Pulseo, a Q-switched diode-pumped solid-state UV laser with 20W of output power at 355 nm and a pulsewidth of 20 ns at a repetition rate of 100 kHz. The company also has released the Vanguard 2.5W quasi-CW DPSS laser with 355nm UV output for photovoltaic processing, laser direct imaging, micromachining, and flow cytometry.
New from Alfalight Inc. (Madison, WI; www.alfalight.com), the AMx-808B high-efficiency 808nm line of chip-on-carrier and fiber-coupled single-emitter diode lasers are ideal for pumping neodymium-doped micro-lasers with improved pump efficiency, resulting in longer pump diode lifetime and improved system efficiency. According to the company, the improved power conversion efficiency of these devices approaches 60 percent at room temperature and is more than 55 percent across the entire operating temperature range of from 0 to 50 degrees C.
The LU1064K1001 from Lumics GmbH (Berlin, Germany; www.lumics.com) is a pulsed seeder laser unit with an optical output of 1W peak power from single-mode fiber. This pulsed diode laser module incorporates temperature and bias control electronics. Target applications include seeder sources for Ytterbium pulsed fiber lasers in MOPA configuration. The device generates optical pulses with a pulsewidth selectable between 10 ns and 250 ns, and a repetition rate selectable from single shot up to 500 kHz.
Fiber optic combiners
SIFAM Fibre Optics Ltd. (Torquay, UK; www.sifamfo.com) has introduced a range of high-power fiber optic combiners that are used to combine the output of up to 19 multi-watt semiconductor diode lasers into a single fiber output. The company says customers are applying these components to achieve combined optical output powers of more than 100 watts CW and 100s of kilowatts pulsed. These systems are used either directly in metal cutting and welding or used to pump the latest generation of high-power fiber lasers for precision marking or industrial and medical machining applications.