TY - JOUR
T1 - Optical fiber array for the delivery of high peak-power laser pulses for fluid flow measurements
AU - Parry, Jonathan P.
AU - Shephard, Jonathan D.
AU - Thomson, Martin J.
AU - Taghizadeh, Mohammad R.
AU - Jones, J. D C
AU - Hand, Duncan P.
PY - 2007/6/10
Y1 - 2007/6/10
N2 - Fiber delivery of 64.7 mJ laser pulses (~6 ns duration) from a Q-switched Nd:YAG laser operating at 532 nm is demonstrated. A custom diffractive optical element was used to shape the laser beam and facilitate coupling into a linear fiber array. This launch arrangement achieves an improvement in launch efficiency compared with a circular fiber bundle evaluated in previous work and the delivery of higher pulse energies is demonstrated. The bundle is capable of delivering light of sufficient pulse energy and, importantly, with suitable focusability, to generate a thin light sheet for the fluid flow measurement technique of particle image velocimetry (PIV). Fiber delivery offers an advantage, in terms of optical access, for the application of PIV to enclosed measurement volumes, such as the cylinder of a combustion engine. © 2007 Optical Society of America.
AB - Fiber delivery of 64.7 mJ laser pulses (~6 ns duration) from a Q-switched Nd:YAG laser operating at 532 nm is demonstrated. A custom diffractive optical element was used to shape the laser beam and facilitate coupling into a linear fiber array. This launch arrangement achieves an improvement in launch efficiency compared with a circular fiber bundle evaluated in previous work and the delivery of higher pulse energies is demonstrated. The bundle is capable of delivering light of sufficient pulse energy and, importantly, with suitable focusability, to generate a thin light sheet for the fluid flow measurement technique of particle image velocimetry (PIV). Fiber delivery offers an advantage, in terms of optical access, for the application of PIV to enclosed measurement volumes, such as the cylinder of a combustion engine. © 2007 Optical Society of America.
UR - http://www.scopus.com/inward/record.url?scp=34547537555&partnerID=8YFLogxK
U2 - 10.1364/AO.46.003432
DO - 10.1364/AO.46.003432
M3 - Article
VL - 46
SP - 3432
EP - 3438
JO - Applied Optics
JF - Applied Optics
SN - 0003-6935
IS - 17
ER -