Multiwave Photonics introduces the first low cost pulsed fiber laser

Pulsed Fiber Lasers for High Finesse Microelectronics Applications

Pulsed fiber lasers have displaced roughly 70% of the LPSS and DPSS lasers traditionally used in basic marking applications, but have seen limited success at displacing DPSS lasers in high finesse applications. Multiwave’s new MOPA-M-HP laser is poised to change that, enabling the use of pulsed fiber lasers in the most demanding applications.

High finesse applications in the Semiconductor and Microelectronics markets.

Applications such as resistor trimming, DRAM repair, microstructuring, micromachining and ceramic and thin film scribing all require excellent beam quality to achieve tightly focused spot sizes and controlled depth of focus. Up till now, the beam quality from available pulsed fiber lasers was marginally acceptable for these applications.

Multiwave’s new MOPA-M-HP series pulsed fiber lasers not only match the beam quality of DPSS lasers (M2 ~1.2) but maintains this beam quality over all operation conditions, including over a repetition rate range from single shot to 500 kHz, an output power range from 1 to 20 Watts and/or over a pulse width range from 10 to 200 ns.

In addition, warm-up time is nearly zero, the laser emits no (ZERO) residual lasing in between pulses and offers fast digital and analog output power control.

Moreover, for processing heat sensitive materials, the laser allows for longer pulses, say 200 ns, to be replaced by bursts of shorter pulses closely spaced (say a burst of five 10 ns pulses spaced by 50 ns, or at 20 MHz). In addition, all pulse parameters can be changed by the user on-the-fly.

The inherent thermal loading issues faced by DPSS lasers limit their operating range with good beam quality. Properly designed fiber lasers are immune to these thermally induced restrictions. Multiwave’s current generation of fiber lasers offer performance that matches and then exceeds DPSS lasers at a cost 3 to 4 times less.

In case you have any questions after having read this article, or when you are interested in additional information or pictures, then please contact us by phone at +31 (0)297-266 191 or by e-mail abos@laser2000.nl

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