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Related Concept Videos

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Related Experiment Video

Updated: May 8, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Optical frequency comb interference profilometry using compressive sensing.

Quang Duc Pham1, Yoshio Hayasaki

  • 1Center for Optical Research and Education (CORE), Utsunomiya University 7-1-2 Yoto, Utsunomiya 321-8585, Japan.

Optics Express
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

A novel optical system uses an ultra-stable frequency comb laser and compressive sensing for precise surface profiling. This method achieves high accuracy and wide dynamic range without mechanical scanning.

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Area of Science:

  • Optics and Photonics
  • Metrology
  • Laser Technology

Background:

  • Accurate surface profile measurement is crucial in various scientific and industrial fields.
  • Traditional methods often face limitations in dynamic range, precision, or speed.
  • Developing advanced optical metrology systems is essential for overcoming these challenges.

Purpose of the Study:

  • To introduce a new optical system for precise surface profile measurement.
  • To leverage the capabilities of ultra-stable lasers and compressive sensing for enhanced metrology.
  • To demonstrate a non-scanning approach for efficient spatial information acquisition.

Main Methods:

  • Utilizing an ultra-stable mode-locked frequency comb femtosecond laser for precise measurements.
  • Employing compressive sensing with two single-pixel fast photo-receivers.
  • Implementing a system that avoids mechanical scanning and reduces the number of required measurements.

Main Results:

  • The system precisely measures objects with large depths and a wide dynamic range.
  • Compressive sensing effectively obtains spatial information using minimal data acquisition.
  • The experimental verification confirmed the advantages of the proposed optical system.

Conclusions:

  • The developed optical system offers a significant advancement in surface profiling technology.
  • The combination of frequency comb lasers and compressive sensing provides a powerful, efficient, and accurate metrology solution.
  • This method holds promise for applications requiring high-resolution, non-contact surface measurements.