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 Jan 1 |
| Externally published | Yes |
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Keywords
- Optical breakdown
- Polarization
- Second harmonic generation
- SHG
- Si(111)7 × 7
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Effect of optical breakdown on second harmonic generation from Si(111)7 × 7 with Nd : YAG laser. / Nakamura, Ken; Ichimura, Shingo; Shimizu, Hazime.
In: Japanese Journal of Applied Physics, Vol. 33, No. 7, 01.01.1994, p. L1035-L1037.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of optical breakdown on second harmonic generation from Si(111)7 × 7 with Nd
T2 - YAG laser
AU - Nakamura, Ken
AU - Ichimura, Shingo
AU - Shimizu, Hazime
PY - 1994/1/1
Y1 - 1994/1/1
N2 - 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.
AB - 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.
KW - Optical breakdown
KW - Polarization
KW - Second harmonic generation
KW - SHG
KW - Si(111)7 × 7
UR - http://www.scopus.com/inward/record.url?scp=0028462506&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028462506&partnerID=8YFLogxK
U2 - 10.1143/JJAP.33.L1035
DO - 10.1143/JJAP.33.L1035
M3 - Article
AN - SCOPUS:0028462506
VL - 33
SP - L1035-L1037
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7
ER -