[2] Lane C[M]. The development of a 2D ultrasonic array inspection for single crystal turbine blades, 1-12(2014).

[3] Padture N P, Gell M, Jordan E H. Thermal barrier coatings for gas-turbine engine applications[J]. Science, 296, 280-284(2002). http://europepmc.org/abstract/med/11951028

[4] Ramesh S, Ramirez D G, Ekkad S V et al. Analysis of film cooling performance of advanced tripod hole geometries with and without manufacturing features[J]. International Journal of Heat and Mass Transfer, 94, 9-19(2016). http://www.sciencedirect.com/science/article/pii/S0017931015010509

[5] Zhu Hainan, Qi Yunxia[J]. Development of machining technology gas holes on turbine blades Aeronautical Manufacturing Technology, 2011, 71-74.

[6] Beck T. Laser drilling in gas turbine blades[J]. Laser Technik Journal, 8, 40-43(2011). http://onlinelibrary.wiley.com/doi/10.1002/latj.201190024/full

[7] Sezer H K, Li L, Schmidt M et al. Effect of beam angle on HAZ, recast and oxide layer characteristics in laser drilling of TBC nickel superalloys[J]. International Journal of Machine Tools and Manufacture, 46, 1972-1982(2006). http://www.sciencedirect.com/science/article/pii/S0890695506000101

[9] Liu D, Seraffon M. Flewitt P E J, et al. Effect of substrate curvature on residual stresses and failure modes of an air plasma sprayed thermal barrier coating system[J]. Journal of the European Ceramic Society, 33, 3345-3357(2013). http://www.sciencedirect.com/science/article/pii/S0955221913002616

[10] Rickerby D S, Winstone M R. Coatings for gas turbines[J]. Materials & Manufacturing Processes, 7, 495-526(1992).

[11] Schulz W, Eppelt U, Poprawe R. Review on laser drilling I. Fundamentals, modeling, and simulation[J]. Journal of Laser Applications, 25, 012006(2013). http://scitation.aip.org/content/lia/journal/jla/25/1/10.2351/1.4773837

[12] Chichkov B N, Momma C, Nolte S et al. Femtosecond, picosecond and nanosecond laser ablation of solids[J]. Applied Physics A, 63, 109-115(1996). http://link.springer.com/article/10.1007/BF01567637

[13] Das D K, Pollock T M. Femtosecond laser machining of cooling holes in thermal barrier coated CMSX4 superalloy[J]. Journal of Materials Processing Technology, 209, 5661-5668(2009). http://www.sciencedirect.com/science/article/pii/S0924013609002210

[14] Feng Q, Picard Y N. McDonald J P, et al. Femtosecond laser machining of single-crystal superalloys through thermal barrier coatings[J]. Materials Science and Engineering: A, 430, 203-207(2006). http://www.sciencedirect.com/science/article/pii/S0921509306009282

[15] Das D K. McDonald J P, Yalisove S M, et al. Femtosecond pulsed laser damage characteristics of 7% Y2O3-ZrO2 thermal barrier coating[J]. Applied Physics A, 91, 421-428(2008).

[16] Haini J, Xiaojun Y, Wei Z et al. Femtosecond laser pulses for drilling the shaped micro-hole of turbine blades[J]. Chinese Physics Letters, 30, 044202(2013). http://www.ingentaconnect.com/content/iop/cpl/2013/00000030/00000004/art044202

[17] Laskin A, Laskin V. Beam shaping to provide round and square-shaped beams in optical systems of high-power lasers[C]. SPIE, 9834, 98340B(2016).

[18] Wang X C, Li Z L, Chen T et al. 355 nm DPSS UV laser cutting of FR4 and BT/epoxy-based PCB substrates[J]. Optics & Lasers in Engineering, 46, 404-409(2008). http://www.sciencedirect.com/science/article/pii/S0143816607002114

[19] Wang X C, Zheng H Y, Chu P L et al. Femtosecond laser drilling of alumina ceramic substrates[J]. Applied Physics A, 101, 271-278(2010). http://link.springer.com/article/10.1007/s00339-010-5816-8

[20] Ashkenasi D, Kaszemeikat T, Mueller N et al. Laser trepanning for industrial applications[J]. Physics Procedia, 12, 323-331(2011). http://www.sciencedirect.com/science/article/pii/S1875389211002197

[21] Chen J K, Tzou D Y, Beraun J E. A semiclassical two-temperature model for ultrafast laser heating[J]. International Journal of Heat and Mass Transfer, 49, 307-316(2006). http://www.sciencedirect.com/science/article/pii/S001793100500445X

[22] Cheng C, Xu X. Mechanisms of decomposition of metal during femtosecond laser ablation[J]. Physical Review B, 72, 165415(2005). http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=VIRT05000004000011000114000001&idtype=cvips&gifs=Yes

[23] Amoruso S, Bruzzese R, Wang X et al. Propagation of a femtosecond pulsed laser ablation plume into a background atmosphere[J]. Applied Physics Letters, 92, 041503(2008). http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=4833681&arnumber=4833708&count=133&index=26

[24] Povarnitsyn M E, Itina T E, Sentis M et al. Material decomposition mechanisms in femtosecond laser interactions with metals[J]. Physical Review B, 75, 235414(2007). http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=VIRT05000006000007000143000001&idtype=cvips&gifs=Yes

[25] Balling P, Schou J. Femtosecond-laser ablation dynamics of dielectrics: basics and applications for thin films[J]. Reports on Progress in Physics, 76, 036502(2013). http://europepmc.org/abstract/MED/23439493

[26] Zhou Y, Wu B, Tao S et al. Physical mechanism of silicon ablation with long nanosecond laser pulses at 1064 nm through time-resolved observation[J]. Applied Surface Science, 257, 2886-2890(2011). http://www.sciencedirect.com/science/article/pii/S0169433210014522

[27] Voisey K T, Kudesia S S. Rodden W S O, et al. Melt ejection during laser drilling of metals[J]. Materials Science and Engineering: A, 356, 414-424(2003).

[28] Voisey K T, Clyne T W. Laser drilling of cooling holes through plasma sprayed thermal barrier coatings[J]. Surface and Coatings Technology, 176, 296-306(2004). http://www.sciencedirect.com/science/article/pii/S0257897203007485

[29] Low D K Y, Li L, Corfe A G. Characteristics of spatter formation under the effects of different laser parameters during laser drilling[J]. Journal of Materials Processing Technology, 118, 179-186(2001). http://www.sciencedirect.com/science/article/pii/S0924013601009104