Product category: Lasers
News Release from: Bookham | Subject: Multimode laser module for fibre laser pumping
Edited by the Electronicstalk Editorial Team on 12 June 2007
Multimode laser module
for fibre laser pumping
Uncooled single emitter module delivers 8 to 10W light output power at 940-960nm from a multimode fibre with 105um core diameter and 0.15 or 0.22 numerical aperture
Bookham will launch a fully qualified ultra-high-power uncooled multimode laser module for fibre laser pumping at Laser 2007 in Munich next week. The uncooled single emitter module, incorporating the latest generation of multimode pump laser chips from the Bookham Zurich facility, delivers 8 to 10W light output power at 940-960nm from a multimode fibre with 105um core diameter and 0.15 or 0.22 numerical aperture.
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The module is designed to support current and next generation fibre laser systems by providing increased brightness while retaining high reliability and cost-effectiveness.
To achieve full qualification, the module's laser chip has undergone a rigorous 5000h accelerated lifetest under various test conditions.
The module itself has also been subjected to a 2000h lifetest at 10A injection current and 45C heatsink temperature.
Further reading
Laser module pumps up the power
The increased output power of the new pump module will enable significant cost reductions in terrestrial legacy systems by reducing the number of pumps required
'With the new higher power pump modules, Bookham continues to build on its leading position in the fibre laser market', says Berthold Schmidt, Director of Product Marketing for High Power Lasers.
'In addition to requiring increasing high brightness, our customers also demand exceptional reliability; we are demonstrating this at Laser with the release of the qualified pump module'.
'We will also show new data that highlights the exceptional ability of our seed laser module, which is being used in pulsed fibre lasers'.
The seed laser butterfly module has been characterised at very high peak currents of up to 5A with 200ns pulses.
During a 2000h lifetest, the modules have proven their long term stability in the pulsed operation mode.
The module incorporates a high power 1060nm single-mode laser diode including a thermistor and a back-facet monitor.
At its stand (B3.149) Bookham will be demonstrating how its high power laser diodes can be configured into pump units to scale the power needed for different fibre laser requirements.
Bookham will partner with customers to demonstrate end applications of its laser diode products, including CW and pulsed fibre lasers for cutting, welding, micromachining, and marking.
In addition to showcasing its technology at the exhibition, Bookham will be delivering two technical papers: 'Broad area single emitter (BASE) modules with improved brightness' and 'Brightness scaling of high power laser diode bars'.
Bookham will also give two talks at the 'Photonics Forum - Talking Trends' entitled 'High performance laser diode bars are setting the pace for industrial systems' and 'Increasing brightness of single emitter pump lasers scales direct diode and fibre laser applications'.
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