17 October 2003 New fiber lasers with temporal pulse shaping of nanosecond pulses for tailoring flexible laser material processing
Author Affiliations +
Proceedings Volume 4977, Photon Processing in Microelectronics and Photonics II; (2003) https://doi.org/10.1117/12.479230
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States
Abstract
Using an innovative approach based on Yb:fiber amplifiers and pre-shaped pulsed diode seeders, a unique laser source with tunable pulse duration and rectangular pulse shape has been developed. Based on the patented use of multimode fibers with single-mode output, the resultant system provides pulses adjustable between 4 and 20 ns duration with sharp rise times of < 1.5 ns, at a repetition rate of up to 20 kHz. The output pulse energy of > 15 microJoules can be maintained over the full tuning range. The high-quality output beam is coupled into a polarization-maintaining, single-mode delivery fiber for ease of integration into an application. With this "tailorable" pulse design, control of laser energy deposition in very confined laser interaction zones (by pulse shape), and of its dosage (by pulse duration) can be optimized by the user and adjusted in real-time from the laser controller in response to measured structural changes. Results of machining of materials such as Si, Cr on glass and drilling of Cu/Pl/Cu are presented, showing the unique capability of this laser and its advantageous use to ablate, structure, repair, or trim very small areas (down to sub-micron size) without damaging or influencing the underlying and/or neighboring structures.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michelle Lynn Stock, Michelle Lynn Stock, Heinrich Endert, Heinrich Endert, Rajesh S. Patel, Rajesh S. Patel, } "New fiber lasers with temporal pulse shaping of nanosecond pulses for tailoring flexible laser material processing", Proc. SPIE 4977, Photon Processing in Microelectronics and Photonics II, (17 October 2003); doi: 10.1117/12.479230; https://doi.org/10.1117/12.479230
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

60W Ho:YLF oscillator-amplifier system
Proceedings of SPIE (February 20 2015)
Freeform beam shaping for high-power multimode lasers
Proceedings of SPIE (March 04 2014)
100-J UV laser for dynamic compression research
Proceedings of SPIE (March 16 2016)
Ultrafast high energy amplifiers beyond the B-integral limit
Proceedings of SPIE (February 23 2006)

Back to Top