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  4. Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP (Unisoku Co., Ltd.)
Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP-USM1400-OPP
Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP-Unisoku Co., Ltd.

Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP
Unisoku Co., Ltd.

Unisoku Co., Ltd.'s Response Status

Response Rate

100.0%

Response Time

51.7hours

About This Product

Observation of ultrafast dynamics measurements of photoexcitation phenomena at the nanoscale.

■Principle of time-resolved STM

The sample is irradiated with pump light and probe light, and the tunneling current flowing between the sample and the probe is measured. When the delay time is short (long), the excited state is occupied (not occupied) by carriers, so the number of carriers excited by the probe light is small (large). As a result, the tunneling current becomes smaller (larger). By measuring the delay time dependence of tunneling current, information on carrier dynamics (such as relaxation time) can be obtained. Furthermore, by changing the tip position, carrier dynamics measurements can be performed with nanoscale spatial resolution.

■Unique delay time modulation method

In order to suppress the probe thermal expansion effect caused by excitation light irradiation and to detect minute time-resolved tunneling current signals with high precision, delay time modulation measurement that changes the delay time in a rectangular waveform is effective. known (patented technology). This device is equipped with a delay time modulation system that is ideal for time-resolved STM measurements and a lock-in amplifier that detects tunneling current in synchronization with the modulation. You can start measuring.

■Lineup

・Low temperature-ultra high vacuum time-resolved STM system USM1400-OPP ・Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP ・Ultra-high vacuum low temperature scanning probe microscope system USM1200 ・Liquid helium-free ultra-high vacuum low temperature scanning tunneling microscope system USM1800 Features

■Compact excitation light source unit

・Temporal resolution ~70ps - Significantly improved operability ・Wavelength is 532nm ・Nanosecond laser can also be selected

■Nanoscale carrier dynamics measurement

・Spatial resolution ~1nm ・Long-term time-resolved measurement (~1day)

■Long-term stable laser spot position

Capable of long time-resolved measurements

■Time-resolved tunnel current

Information such as relaxation time of photoexcited carriers

■Relaxation time nanoscale imaging of photoexcited carriers

・Long-term measurement possible ・Spatial resolution ~1nm

  • Product

    Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP

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1 Models of Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP

Image Part Number Price (excluding tax) Degree of vacuum Measurement temperature Liquid He retention time Probe coarse movement distance (sample vertical direction) Probe stage movement range (sample horizontal direction) Light incidence angle Lens stage movement distance Lens STM scan range
Time-resolved scanning tunneling microscope system Low-temperature-ultra-high vacuum time-resolved STM system USM1400-OPP-Part Number-USM1400-OPP

USM1400-OPP

Available upon quote

Ultra high vacuum

Room temperature, 78K, 6-100K

40h/12L

±2.5 mm

±3 mm

55° from perpendicular to the sample surface

X, Y: ±3 mm, Z: ±2 mm

Aspheric lens (NA: 0.3)

1.7um

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About Company Handling This Product

Unisoku Co., Ltd.

Response Rate

100.0%

Response Time

51.7hrs

  • Japan

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