Picosecond mid-IR laser induced surface damage on Gallium Phosphate (GaP) and Calcium Fluoride(CaF2)
- 159 Downloads
Picosecond mid-IR USPL induced surface damage on a Gallium Phosphate (GaP) and Calcium Fluoride (CaF2) is reported. A semiconductor GaP and a dielectric material CaF2, that are transparent over3–10μm, were exposed to one picosecond mid-IR light (4.7μm) to investigate laser-induced surface morphological changes on the target The initiation of damage along the polishing scratch line of GaP and the random location of damage digs on the CaF2 suggests that the mid-IR picosecond laser-induced damage on targets started from intrinsic surface defects. Multiple pulse irradiations produced periodic corrugated surface structures (ripples) perpendicular to the polarization of light on both GaP and CaF2. In terms of the orientation and the spacing between ripples, observed ripples have common features with previously reported ripples.
KeywordsUltra short pulse laser Laser machining Incubation effect Laser-induced ripple
Unable to display preview. Download preview PDF.
- Akhmanov, S. A., Emel’yanov, V. I., Koroteev, N. I. and Seminogov, V. N., 1985, “Interaction of Powerful Laser Radiation with the Surfaces of Semiconductors and Metals: Nonlinear Optical Effects and Nonlinear Optical Diagnostics,” Sovietphysics: Uspekhi, Vol. 28, pp. 1084–1124.CrossRefGoogle Scholar
- Baurele, D., 2000a,Laser processing and chemistry, Chapter 12, Berlin, Springer.Google Scholar
- Baurele, D., 2000b,Laser processing and che-mistry, Chapter 21, Berlin, Springer.Google Scholar
- Chang, W., Choi, M., Kim, J., Cho, S. and Whang, K., 2004, “Nanoscale Patterning Using Femtosecond Laser and Self-Assembled Monolayers(SAMs),”Journal of Korean Society of Mechanical Engineering, Vol. 28, pp. 1270–1275.Google Scholar
- Gusev, V. E. and Karabutov, A. A., 1993,Laser Optoacoustics, New York: AIP Press.Google Scholar
- Kittel, C., 1996,Introduction to solid state physics, 7th ed., Wiley, New York.Google Scholar
- Koechner, W., 2000,Solid State Laser Engineering, Chapter 11, Berlin, Springer.Google Scholar
- Oraevsky, A. A., Da Silva, L. B., Rubenchik, A. M., Feit, M. D., Glinsky, M. E., Perry, M. D., Mammini, B. M., Small, W. IV and Stuart, B. C., 1996, “Tissues With Nanosecond-to-Femtosecond Laser Pulses: Rel-ative Role of Linear and. Nonlinear Absorption, “IEEE Journal of Selected Topics in Quantum Electronics, Vol. 2, pp. 801–809.CrossRefGoogle Scholar
- Oraevsky, A. A., Jacques, S. L. and Tittel, F. K. “Measurements of Tissue Optical Properties by Means of Time-Resolved Detection of Laser-Induced Transient Stress,”Applied Optics, Vol. 36, pp. 402–415.Google Scholar
- Simanovskii, D., Schwettman, H. A., Lee, H. and Welch, A. J., 2003, “Mid-Infrared Optical Break-down in Dielectrics,”Physical Review Letters, Vol. 91, No. 10,107601(1–4).Google Scholar
- Vasquez, M. J., Halada, G. P., Clayton, C. R. and Gouma, P. I., 1999, “Fabrication of Nanostructured Al CuMg Thin Film by Femtosecond Pulsed Laser Ablation,”Thin Solid Films, Vol. 458, pp. 37–42.Google Scholar