The apertured fiber-tip generating evanescent field, which is called
a probe, is an important part of SNOM, and it is a main factor in determining
the resolution of the whole system. Figure 8.42 shows some typical probe designs
[86]. Figure 8.43 shows the schematic structure of a SNOM, which is made up of
a laser, a probe, an illuminating system, a focusing system, photodetectors, scanning
units, and a control/display system [86]. The probe is often fabricated by a
metal film coated fiber tip and controlled by PZT for modulation and scanning.
The transmitted and/or reflected signals are collected by photodetectors, such as
PMT and CCD. The optical signals and image information that are obtained are
processed by a computer. The probe and its coupling efficiency to the evanescent
wave are key features of SNOM. The resolution and sensitivity of SNOM can be
improved by optimizing fabrication and design of the probe and accurately controlling
the distance between the probe and the recording medium. Optical recording
with nanometer-scale recording marks can be achieved with SNOM
เส้นใยปลาย The apertured fiber-tip generating evanescent field, which is called
สร้างสนามเลือนหายไปซึ่งเรียกว่าการสอบสวนที่เป็นส่วนสำคัญของSNOM a probe, is an important part of SNOM, and it is a main factor in determining
และจะเป็นปัจจัยหลักในการกำหนดความละเอียดของทั้งระบบ รูปที่ the resolution of the whole system. Figure 8.42 shows some typical probe designs
[ รูปที่ [86]. Figure 8.43 shows the schematic structure of a SNOM, which is made up of
ซึ่งถูกสร้างขึ้นจากเลเซอร์สอบสวนa laser, a probe, an illuminating system, a focusing system, photodetectors, scanning
ระบบแสงสว่างระบบโดยมุ่งเน้นตรวจจับแสงสแกนหน่วยและระบบการควบคุม/ units, and a control/display system [86]. The probe is often fabricated by a
metal film coated fiber tip and controlled by PZT for modulation and scanning.
The transmitted and/or reflected signals are collected by photodetectors, such as
PMT and CCD. The optical signals and image information that are obtained are
processed by a computer. The probe and its coupling efficiency to the evanescent
wave are key features of SNOM. The resolution and sensitivity of SNOM can be
improved by optimizing fabrication and design of the probe and accurately controlling
the distance between the probe and the recording medium. Optical recording
with nanometer-scale recording marks can be achieved with SNOM
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