technology products laser and diodes Mini fibre-coupled modules
Dilas Industrial Laser Systems has released a new integrated diode laser system based on fibre- coupled modules – the Mini. Despite the small dimensions of 336 x 144mm, the high-power diode laser system delivers optical output powers of up to 50W CW at 980nm from of a 400μm fibre, and up to 35W CW power out of a 200μm fibre. Cooling is provided by Peltier elements and air flow. The system can be controlled by a USB port using the supplied software or by conventional analogue and 24V signals. The Mini is available as an easily integrable OEM
Modelocked fibre laser system
Toptica has introduced a tunable ‘ultra compressed pulse’ model of its successful Femtofibre pro series. The system provides a supercontinuum between 980 and 1,400nm at more than 30mW output power. It features pulse durations even of 25fs or shorter, the shortest one can get on the market from a modelocked fibre laser system. The system is well-suited for biophotonics, pump-probe experiments or fs-spectroscopy. The Femtofibre pro UCP is based on reliable
saturable absorber mirror (SAM) mode- locking technology and a subsequent core- pumped fibre amplifier. This master oscillator power amplifier (MOPA) platform is all-fibre and based completely on polarisation- maintaining fibres. The SAM technology ensures self-starting and a stable mode- locking under all laboratory conditions and the all-fibre setup offers robustness against environmental changes. The system includes two motorised
prism compressors; the first optimises the supercontinuum generated by a highly nonlinear fibre, while the second is used to optimise the pulse duration. Pulse durations in the range down to 13fs can be achieved. The standard repetition rate is 80MHz, but 40MHz rates are also available. Up to three fibre- coupled seed ports turn every Femtofibre pro model into a complex laser system for multi- beam experiments with optically synchronised laser pulses.
www.toptica.com
integrated cW lasers
Coherent has launched its Obis family of highly integrated CW lasers featuring true plug-and-play simplicity. Based on direct diode and optically pumped semiconductor laser (OPSL) technologies and using state-of-the-art miniaturised components, these lasers have all control functions integrated inside their compact laser head, in contrast to the traditional architecture of head, dedicated cable and controller. Ranging in
28 electro optics l MARCH 2011
version (without housing) or as a housed desktop version. A fibre optic cable of 5m length and with SMA connector allows flexible beam guidance to the working area. Available accessories like processing
12W laser for ti: sapphire pumping
Laser Quantum has introduced the Finesse 12, its most powerful laser to date, offering 12W of true CW output, low noise (0.15 per cent RMS) and a 532nm wavelength suitable for Ti:sapphire pumping applications. The laser features a proprietary cavity design, which achieves a highly stable, ultra-quiet CW output in a diffraction-limited beam (M2
‹1.1). The laser is
contained in a compact and robust package with integrated cooling mechanisms allowing for easy installation and integration into OEM systems.
compact cW laser
Laser Quantum’s Tau laser is the first in its new line of compact CW lasers. The compact mono-block design allows the laser to be easily integrated into OEM designs, while the laser’s highly-stable, diffraction limited beam offers 532nm output at up to 50mW. The Tau is a high-specification, single
transverse mode CW green laser, well suited to Raman spectroscopy, fluorescence spectroscopy, DNA sequencing and many other applications. The laser has been ruggedised to withstand
power up to 100mW, the initial product offering includes models at seven wavelengths from the UV through near-IR: 375nm, 405nm, 445nm, 488nm, 640nm, 660nm, and 785nm, all with a circular TEM00 output beam. The company adds that the wavelength scalability of OPSL technology will allow new wavelengths to be developed as they are required. The Obis laser head measures 38 x 40 x 70mm, and permits direct high-speed digital and analogue
heads of different focal spot sizes and working distances can be used in conjunction with the system. Furthermore, the integrated red pilot beam facilitates to adjust the laser to the work piece. The Mini is suitable for a variety of applications
in direct materials processing, such as selective soldering and welding of plastics.
www.dilas.com
The patented cavity is fibre-fed from the pump diode, which is housed in the power supply, thereby removing the heat load from the head and enabling stable, low-noise operation. Other features across the
Finesse range include power feedback, a physical shutter and a zero-stress cavity optical design. The power supply features a large LCD screen, self-optimisation, intuitive controls, an RS232 interface and
Laser Quantum’s RemoteCal technology, which allows access to the system via a modem port.
www.laserquantum.com
temperature changes and extreme vibrations. Zero stress opto- mechanics have been designed to minimise the effect of shock impacts and the laser’s feet are engineered to deform under high stress, eliminating mechanical strain within the head.
www.laserquantum.com
modulation (up to 150MHz). Applications for range from life sciences to metrology and inspection.
www.coherent.com
www.electrooptics.com
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