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Volumn 2, Issue 4, 2002, Pages 279-283

Near-Field Imaging of Nonlinear Optical Mixing in Single Zinc Oxide Nanowires

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Indexed keywords


EID: 0000635547     PISSN: 15306984     EISSN: None     Source Type: Journal    
DOI: 10.1021/nl015686n     Document Type: Article
Times cited : (318)

References (26)
  • 10
    • 0347479006 scopus 로고    scopus 로고
    • note
    • A chemically etched optical fiber was held at a constant distance (<10 nm) from the sample by a shear-force feedback mechanism. The excitation source for 800 nm/400 nm SHG measurements was a regeneratively amplified Ti:sapphire laser (80 fs, 800 nm, 2,0 W, 1 kHz) that was attenuated to <1 mW and focused onto the sample to a spot size of approximately 100 μm in diameter. Near-infrared wavelengths were generated by using the Ti:sapphire amplifier to pump an optical parametric amplifier, which has a tunable signal/ idler wavelength of 1.2-2.7 μm. The polarization of the incident light was controlled with a λ/2 waveplate. The identity of the SHG and THG signal was confirmed by observing the spectrum with a monochromator and CCD and by performing a power-dependence using a stepped-index neutral density filter.
  • 18
    • 0348109088 scopus 로고    scopus 로고
    • note
    • The phase mismatch term is neglected in the calculations. As discussed in ref 9, phase-matching is thought to be relaxed in near-field experiments. Moreover, the sample thickness probed is much smaller than the coherence length. Therefore, it is expected that phase-matching effects will be negligible.
  • 19
    • 0346848483 scopus 로고    scopus 로고
    • note
    • The subscript coordinates symbolize the polarization direction of the second-harmonic and the fundamental photons with respect to the crystal axes. The only allowed SHG in this experiment has polarization along the crystal z-axis, which is the symmetric axis of the nanowire.
  • 21
    • 0346848484 scopus 로고    scopus 로고
    • note
    • (2) with SFG polarized perpendicularly to the z-axis of the nanowire.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.