Narrow-linewidth megahertz-rate pulse-burst laser for high-speed flow diagnostics
作者： Brian Thurow , Naibo Jiang , Mo Samimy , Walter Lempert
DOI: 10.1364/AO.43.005064
关键词: Femtosecond pulse shaping 、 Velocimetry 、 Planar Doppler velocimetry 、 Laser linewidth 、 Optics 、 Ultrafast laser spectroscopy 、 Materials science 、 High harmonic generation 、 Laser 、 Multiphoton intrapulse interference phase scan 、 Atomic and Molecular Physics, and Optics
摘要: A second-generation pulse-burst laser system for high-speed flow diagnostics is described in detail. The can produce a burst of high-energy pulses (of the order hundreds millijoules per pulse) with individual pulse durations less than 10 ns and separations as short 1 micros. key improvement addition phase-conjugate mirror, which effectively isolates high-intensity, short-duration from low-intensity, long-duration background illumination. It allows more-efficient amplification harmonic generation, efficiencies exceeding 50% second-harmonic 40% third-harmonic generation. Characteristics system, including gain narrowing, energy distribution, overall energy, are described. In addition, applicability spectroscopic-based demonstrated through presentation megahertz-rate planar Doppler velocimetry results.
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M. Aldén, C.F. Kaminski, G. Josefsson, J. Hult, Flame front tracking and simultaneous flow field visualization in turbulent combustion ,(2000)
John E. Field, Jonathan M. Huntley, High-speed laser speckle photography Second Intl Conf on Photomechanics and Speckle Metrology: Speckle Techniques, Birefringence Methods, and Applications to Solid Mechanics. ,vol. 1554, pp. 756- 765 ,(1991) , 10.1117/12.49525
D. Neshev, I. Velchev, W.A. Majewski, W. Hogervorst, W. Ubachs, SBS pulse compression to 200 ps in a compact single-cell setup Applied Physics B. ,vol. 68, pp. 671- 675 ,(1999) , 10.1007/S003400050684
Brian S. Thurow, Naibo Jiang, Walter R. Lempert, Mo Samimy, Development of Megahertz-Rate Planar Doppler Velocimetry for High-Speed Flows AIAA Journal. ,vol. 43, pp. 500- 511 ,(2005) , 10.2514/1.7749
Pingfan Wu, Walter L. Lempert, Richard B. Miles, Megahertz Pulse-Burst Laser and Visualization of Shock-Wave/Boundary-Layer Interaction AIAA Journal. ,vol. 38, pp. 672- 679 ,(2000) , 10.2514/2.1009
Brian Thurow, Mo Samimy, Walter Lempert, Compressibility effects on turbulence structures of axisymmetric mixing layers Physics of Fluids. ,vol. 15, pp. 1755- 1765 ,(2003) , 10.1063/1.1570829
Gregory S. Elliott, Thomas J. Beutner, Molecular filter based planar Doppler velocimetry Progress in Aerospace Sciences. ,vol. 35, pp. 799- 845 ,(1999) , 10.1016/S0376-0421(99)00008-1
Brian Thurow, James Hileman, Walter Lempert, Mo Samimy, A technique for real-time visualization of flow structure in high-speed flows Physics of Fluids. ,vol. 14, pp. 3449- 3452 ,(2002) , 10.1063/1.1503802
M. Samimy, M. P. Wernet, Review of Planar Multiple-Component Velocimetry in High-Speed Flows AIAA Journal. ,vol. 38, pp. 553- 574 ,(2000) , 10.2514/2.1004
C.F. Kaminski, J. Hult, M. Aldén, High repetition rate planar laser induced fluorescence of OH in a turbulent non-premixed flame Applied Physics B. ,vol. 68, pp. 757- 760 ,(1999) , 10.1007/S003400050700