Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications

Jonathan D. Shephard; Francois Couny; P. S J Russell; J. D C Jones; Jonathan C. Knight; Duncan P. Hand

doi:10.1364/AO.44.004582

Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications

Jonathan D. Shephard, Francois Couny, P. S J Russell, J. D C Jones, Jonathan C. Knight, Duncan P. Hand

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

We report the delivery of high-energy nanosecond pulses (~65 ns pulse width) from a high-repetition-rate (up to 100 kHz) Q-switched Nd:YAG laser through the fundamental mode of a hollow-core photonic crystal fiber (HC-PCF) at 1064 nm. The guided mode in the HC-PCF has a low overlap with the glass, allowing delivery of pulses with energies above those attainable with other fibers. Energies greater than 0.5 mJ were delivered in a single spatial mode through the hollow-core fiber, providing the pulse energy and high beam quality required for micromachining of metals. Practical micromachining of a metal sheet by fiber delivery has been demonstrated. © 2005 Optical Society of America.

Original language	English
Pages (from-to)	4582-4588
Number of pages	7
Journal	Applied Optics
Volume	44
Issue number	21
DOIs	https://doi.org/10.1364/AO.44.004582
Publication status	Published - 20 Jul 2005

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title = "Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications",

abstract = "We report the delivery of high-energy nanosecond pulses (~65 ns pulse width) from a high-repetition-rate (up to 100 kHz) Q-switched Nd:YAG laser through the fundamental mode of a hollow-core photonic crystal fiber (HC-PCF) at 1064 nm. The guided mode in the HC-PCF has a low overlap with the glass, allowing delivery of pulses with energies above those attainable with other fibers. Energies greater than 0.5 mJ were delivered in a single spatial mode through the hollow-core fiber, providing the pulse energy and high beam quality required for micromachining of metals. Practical micromachining of a metal sheet by fiber delivery has been demonstrated. {\textcopyright} 2005 Optical Society of America.",

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T1 - Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications

AU - Shephard, Jonathan D.

AU - Couny, Francois

AU - Russell, P. S J

AU - Jones, J. D C

AU - Knight, Jonathan C.

AU - Hand, Duncan P.

PY - 2005/7/20

Y1 - 2005/7/20

N2 - We report the delivery of high-energy nanosecond pulses (~65 ns pulse width) from a high-repetition-rate (up to 100 kHz) Q-switched Nd:YAG laser through the fundamental mode of a hollow-core photonic crystal fiber (HC-PCF) at 1064 nm. The guided mode in the HC-PCF has a low overlap with the glass, allowing delivery of pulses with energies above those attainable with other fibers. Energies greater than 0.5 mJ were delivered in a single spatial mode through the hollow-core fiber, providing the pulse energy and high beam quality required for micromachining of metals. Practical micromachining of a metal sheet by fiber delivery has been demonstrated. © 2005 Optical Society of America.

AB - We report the delivery of high-energy nanosecond pulses (~65 ns pulse width) from a high-repetition-rate (up to 100 kHz) Q-switched Nd:YAG laser through the fundamental mode of a hollow-core photonic crystal fiber (HC-PCF) at 1064 nm. The guided mode in the HC-PCF has a low overlap with the glass, allowing delivery of pulses with energies above those attainable with other fibers. Energies greater than 0.5 mJ were delivered in a single spatial mode through the hollow-core fiber, providing the pulse energy and high beam quality required for micromachining of metals. Practical micromachining of a metal sheet by fiber delivery has been demonstrated. © 2005 Optical Society of America.

U2 - 10.1364/AO.44.004582

DO - 10.1364/AO.44.004582

M3 - Article

SN - 1559-128X

VL - 44

SP - 4582

EP - 4588

JO - Applied Optics

JF - Applied Optics

IS - 21

ER -

Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications

Abstract

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