Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

Determination of Crystal Structures

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Cobalt-Catalyzed C─H Oxidation of Alkanes and Postfunctionalization of Polyolefin Elastomers.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025

Same author

Cemento-osseous Dysplasia Mimicking Periapical Cyst After the Orthodontic Treatment of the Mandible.

The Journal of craniofacial surgery·2025

Same author

Investigation of Residue Dissipation of Fluxapyroxad and Its Metabolites in Chinese Cabbage and Spring Scallion Using Different Application Methods.

Plants (Basel, Switzerland)·2024

Same author

Simultaneous Measurement of Group Refractive Index Dispersion and Thickness of Fused Silica Using a Scanning White Light Interferometer.

Sensors (Basel, Switzerland)·2024

Same author

Dense D2C-Net: dense connection network for display-to-camera communications.

Optics express·2023

Same author

Thermal suppression of high-repetition rate SBS pulse compression in liquid media.

Optics express·2022

Search research articles

Related Experiment Video

Updated: Jun 14, 2026

Probing Nicotinic Acetylcholine Receptor Function in Mouse Brain Slices via Laser Flash Photolysis of Photoactivatable Nicotine

Probing Nicotinic Acetylcholine Receptor Function in Mouse Brain Slices via Laser Flash Photolysis of Photoactivatable Nicotine

Published on: January 25, 2019

Multihit mode direct-detection laser radar system using a Geiger-mode avalanche photodiode.

Min Seok Oh¹, Hong Jin Kong, Tae Hoon Kim

¹Department of Physics, KAIST, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.

The Review of Scientific Instruments

|April 8, 2010

Summary

This study presents a direct-detection laser radar system using a Geiger-mode avalanche photodiode (GAPD) and a time-to-digital converter (TDC). The system achieves high precision for laser radar measurements, improving with averaged laser pulses.

More Related Videos

Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

Published on: June 13, 2010

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Published on: April 28, 2022

Related Experiment Videos

Last Updated: Jun 14, 2026

Probing Nicotinic Acetylcholine Receptor Function in Mouse Brain Slices via Laser Flash Photolysis of Photoactivatable Nicotine

Probing Nicotinic Acetylcholine Receptor Function in Mouse Brain Slices via Laser Flash Photolysis of Photoactivatable Nicotine

Published on: January 25, 2019

Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

Published on: June 13, 2010

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Published on: April 28, 2022

Area of Science:

Optoelectronics
Laser Radar Technology
Photonics

Background:

Direct-detection laser radar systems require fast signal processing and precise timing.
Geiger-mode avalanche photodiodes (GAPDs) offer high sensitivity but can have limitations like dead time.
Accurate 3D environmental mapping relies on precise distance measurements.

Purpose of the Study:

To develop and characterize a direct-detection laser radar system with enhanced precision.
To investigate the performance of a Geiger-mode avalanche photodiode (GAPD) with short dead time in a laser radar application.
To establish a robust system for 3D visualization and noise reduction in laser radar data.

Main Methods:

Utilized a passively Q-switched microchip laser as the light source.
Employed a Geiger-mode avalanche photodiode (GAPD) with a 45 ns dead time for detection.
Integrated a compact peripheral component interconnect (PCI) system with a time-to-digital converter (TDC) for multihit acquisition.
Developed custom software for 3D visualization and noise removal algorithms.

Main Results:

Achieved a single-shot precision of approximately 10 cm (sigma).
Improved precision to approximately 1 cm (sigma) by averaging over 150 laser pulses.
Demonstrated system accuracy of 12 cm despite a 7-fold variation in laser pulse energy.
Successfully implemented multihit acquisition for enhanced data capture.

Conclusions:

The developed direct-detection laser radar system offers high precision and accuracy for 3D measurements.
The combination of a short dead time GAPD and TDC enables efficient multihit acquisition.
The system's performance is suitable for applications requiring detailed environmental mapping and object detection.