We have studied surface second-harmonic generation from thin layers of several oligothiophenes deposited by vacuum sublimation on fused silica substrates, Although these oligothiophenes have a symmetric "rr-electron system, they show a second-harmonic response which is strongly dependent on the conj
Thickness dependence of optical second-harmonic generation from ultrathin niobium films
β Scribed by Ole Keller; Anatoly Zayats; Ansheng Liu; Kjeld Pedersen; Fedor A. Pudonin; Eugeny A. Vinogradov
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 671 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0030-4018
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
We present a simple model for calculating the second-order optical response of a film of chiral molecules. The difference in the output signal for right or left circularly polarized input is analyzed. A strong enhancement in the normalized differential signal is found for p-polarized output. This is
The growth of anodic sulphide films on vicinal Cd x Hg 1--x Te (CMT) surfaces has been investigated as a function of sulphide layer thickness by rotation anisotropy using second harmonic generation (SHG). The presence of thin CdS films on the CMT surface does not alter the fourfold pattern observed
Third-harmonic generation measurements have been performed at 10= 1064 nm on ultrathin films of polyphenylacetylene. The nonlinearsusceptibilityX2 X ( -3~; w, w, o) wasdeterminedtobe (7.0 I! 1.0) x 10-rlesu withthephaseof~rs'equai to 152" f 5" indicating that two-and three-photon resonances contribu