Simultaneous optical second harmonic and sum frequency intensity image observation of hydrogen deficiency on a H–Si(111) 1×1 surface after IR light pulse irradiation

Miyauchi, Yuhei; Sano, Hikaru; Okada, Jutaro; Yamashita, Hideaki; Mizutani, Goro

doi:10.1016/j.susc.2009.08.003

Cited by 15 publications

(22 citation statements)

References 17 publications

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“…1 was used in order to study the micron-scale spatial distribution of hydride species on the Si(111) surface. [13] By using the SFG microscopy, one can take the SFG intensity image and the SFG spectrum of the same area on the Si surface simultaneously.…”

Section: Methodsmentioning

confidence: 99%

“…[5] However, anisotropy or island structure of hydrogen distribution formed as a result of the interaction between adsorbates was not observed directly in those works. Thus, we have used SFG microcopy [13] for direct observation of hydrogen diffusion. SFG microscopy is the only method for nondestructive observation of hydrogen distribution on the silicon surface.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen desorption from a Si(111)1×1 surface studied by sum frequency generation spectroscopy and microscopy

Hien

Miyauchi

Kikuchi

et al. 2011

Surface & Interface Analysis

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We studied isothermal hydrogen desorption from a Si(111)1Â1 surface at temperatures of~711, 732, 752, and 771 K by observing sum frequency generation (SFG). Peak shift and width broadening of the Si-H vibration occurred with increase of heating time. We also obtained SFG intensity images of monohydride species on the surface after heating for 10 s at temperatures of 592, 625, 666, 728, and 752 K. The SFG intensity images with a spatial resolution of 5 mm indicated that the hydrogen desorption was homogeneous. This result suggests that the hydrogen atoms diffused homogeneously on the Si(111)1Â1 surface.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrogen desorption from a Si(111)1×1 surface studied by sum frequency generation spectroscopy and microscopy

Hien

Miyauchi

Kikuchi

et al. 2011

Surface & Interface Analysis

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show abstract

“…These results suggest that most of the SFG signals in the irradiated area are due to the surface electronic level associated with the dangling bonds formed after hydrogen desorption. We suggest that the signals may have been enhanced by an electronic transition caused by the IR probe light [28]. In Figure 6(b), one can see strong NR-SFG signals generated at the irradiated areas; these may originate from the dangling bonds created after the hydrogen desorption caused by the pulse light irradiation.…”

Section: Sfg Microscopy Of Hydrogen Species On a Si(111) Surfacementioning

confidence: 91%

“…However, no one has developed SFG microscopy for observing a sample in UHV conditions. Thus, we decided to develop a multifunctional SFG microscope to facilitate convenient analysis of a semiconductor surface under UHV conditions [28][29][30][31][32].…”

Section: Sfg and Shg Microscopymentioning

confidence: 99%

Second-Order Nonlinear Optical Microscopy of a H–Si(111)1 × 1 Surface in Ultra-High Vacuum Conditions

Miyauchi

2012

Physics Research International

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This paper reviews the use of optical sum frequency generation (SFG) and second harmonic generation (SHG) microscopy under ultra-high vacuum (UHV) conditions to observe the dynamics of a hydrogen terminated Si(111)1 × 1 surface. First, we took SFG and SHG microscopic images of the surface after IR light pulse irradiation and found that the SHG and nonresonant SFG signals were enhanced, probably due to the formation of dangling bonds after hydrogen desorption. Second, we observed time-resolved SFG intensity images of a H-Si(111)1 × 1 surface. After visible pump light irradiation, the nonresonant SFG signal increased at probe delay time 0 ps and then decreased over a life time of 565 ps. The resonant SFG signal reduced dramatically at 0 ps and then recovered with an anisotropic line shape over a life time of 305 ps. The areas of modulated SFG signals at delay time 277 ps were expanded with an anisotropic aspect. Finally, we observed SFG intensity images of hydrogen deficiency on a Si(111)1 × 1 surface as a function of temperature. These images of the H-Si(111) surface, taken with a spatial resolution of 5 μm at several temperatures from 572 to 744 K, showed that the hydrogen desorbs homogeneously.

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“…In analogy with spectroscopic VR-SFG measurements, several wide-field, noncollinear illumination schemes have been utilized for microscopic applications. In such wide-field configurations, the SFG radiation from a large area is commonly captured by an objective lens and projected onto a CCD camera [8–11]. The highest lateral resolution attained with a wide-field geometry has been estimated as ~1.1 μ m [12].…”

mentioning

confidence: 99%

Rapid vibrational imaging with sum frequency generation microscopy

et al. 2011

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We demonstrate rapid vibrational imaging based on sum frequency generation (SFG) microscopy with a collinear excitation geometry. Using the tunable picosecond pulses from a high-repetition-rate optical parametric oscillator, vibrationally selective imaging of collagen fibers is achieved with submicrometer lateral resolution. We furthermore show simultaneous SFG and second harmonic generation imaging to emphasize the compatibility of the microscope with other nonlinear optical modalities.

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Simultaneous optical second harmonic and sum frequency intensity image observation of hydrogen deficiency on a H–Si(111) 1×1 surface after IR light pulse irradiation

Cited by 15 publications

References 17 publications

Hydrogen desorption from a Si(111)1×1 surface studied by sum frequency generation spectroscopy and microscopy

Hydrogen desorption from a Si(111)1×1 surface studied by sum frequency generation spectroscopy and microscopy

Second-Order Nonlinear Optical Microscopy of a H–Si(111)1 × 1 Surface in Ultra-High Vacuum Conditions

Rapid vibrational imaging with sum frequency generation microscopy

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