Abstract
Effect of optical breakdown on second harmonic generation (SHG) from Si(111)7 × 7 was investigated. After the irradiation of a laser beam with a threshold energy for the optical breakdown, the intensity of second harmonics (SH) polarized along the [01(formula presented)] axis measured as a function of pump-polarization showed deviation from 90° periodicity which is expected from the surface C3v symmetry, although low energy electron diffraction (LEED) still exhibited the 7×7 structure. The irradiation of a more intense laser beam led to structural disorder, resulting in complete disappearance of SH periodicity, and no pattern of LEED was exhibited.
| Original language | English |
|---|---|
| Pages (from-to) | L1035-L1037 |
| Journal | Japanese journal of applied physics |
| Volume | 33 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1994 Jul |
Keywords
- Optical breakdown
- Polarization
- SHG
- Second harmonic generation
- Si(111)7 × 7
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
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Nakamura, K., Ichimura, S., & Shimizu, H. (1994). Effect of optical breakdown on second harmonic generation from Si(111)7 × 7 with Nd:YAG laser. Japanese journal of applied physics, 33(7), L1035-L1037. https://doi.org/10.1143/JJAP.33.L1035