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Updated: Jun 8, 2026

Near Simultaneous Laser Scanning Confocal and Atomic Force Microscopy (Conpokal) on Live Cells

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Published on: August 11, 2020

Semiconductor laser confocal microscopy.

R Juskaitis, N P Rea, T Wilson

|September 24, 2010

Summary

This summary is machine-generated.

This study introduces a compact scanning microscope using a semiconductor laser for illumination and signal detection, achieving confocal operation through spatial filtering. Two detection methods were compared for performance.

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Video-rate Scanning Confocal Microscopy and Microendoscopy

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Published on: October 20, 2011

Area of Science:

Optical microscopy
Semiconductor device physics

Background:

Confocal microscopy offers enhanced resolution and optical sectioning capabilities.
Traditional confocal microscopes often require complex optical setups.

Purpose of the Study:

To describe a compact scanning microscope utilizing a semiconductor laser for both illumination and detection.
To demonstrate confocal operation in this novel system.
To compare two distinct signal detection regimes.

Main Methods:

A semiconductor laser was employed as both the light source and the detector.
Spatial filtering by the laser detector was utilized to achieve confocal performance.
Two detection methods were evaluated: laser power monitoring and diode junction voltage sensing.

Main Results:

The integrated laser illumination and detection system successfully achieved confocal operation.
The spatial filtering inherent in the laser detector was confirmed as the mechanism for confocal behavior.
Performance differences between the laser power monitor and diode junction voltage detection regimes were analyzed.

Conclusions:

A compact and potentially cost-effective confocal scanning microscope design is presented.
The use of a semiconductor laser for both illumination and detection simplifies the optical system.
Further investigation into the optimal detection regime for specific applications is warranted.