研究目的
Investigating THz wave emission from ZnTe nano-colloidal aqueous dispersion under femtosecond laser irradiation.
研究成果
THz wave emission from ZnTe nano-colloidal aqueous dispersion was confirmed, indicating potential for future applications in THz sources and technology.
研究不足
The study is limited to ZnTe nano-colloidal aqueous dispersion with specific particle sizes and densities. Further research is needed for different solvents and particle shapes.
1：Experimental Design and Method Selection:
THz wave emission was measured by time-domain spectroscopy (TDS) under femtosecond laser irradiation.
2：Sample Selection and Data Sources:
ZnTe nano-colloidal aqueous dispersion with two different particle densities (
3：60 mmol/L and 07 mmol/L) and distilled water as a reference. List of Experimental Equipment and Materials:
Femtosecond laser (>35 fs/transform-limited, 800 nm), TDS system, ZnTe nano-colloidal aqueous dispersion.
4：Experimental Procedures and Operational Workflow:
Laser pulses were irradiated on the dispersion flow in air, and THz wave emission was measured by TDS.
5：Data Analysis Methods:
TDS signal wave-forms were analyzed for intensity and peak shift.
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transmission electron microscope
JEM-2000FX
JEOL
Measuring ZnTe particle sizes
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X-ray diffractometer
MiniFlex II
Rigaku
Obtaining X-ray diffraction patterns
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femtosecond laser
Mantis, Legend HE USP
Coherent, Inc.
Irradiation source for inducing THz wave emission
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UV-Vis spectrometer
UV-1800
Shimazu
Measuring absorption spectra
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off-axis parabolic mirror
47-097
Edmund Optics
Focusing the laser pulses
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ZnTe crystal
1-mm thick
Nippon Mining & Metals Co., Ltd.
Detection medium for TDS measurements
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