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Related Concept Videos

Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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.
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...

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Related Experiment Video

Updated: Jun 20, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

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Published on: October 13, 2017

Tunable ArF excimer-laser source.

J C White, J Bokor, R R Freeman

    Optics Letters
    |August 25, 2009
    PubMed
    Summary
    This summary is machine-generated.

    A new tunable ArF* (193-nm) excimer laser source offers high pulse energy and narrow spectral width. This advancement in laser technology enables precise wavelength control for various scientific applications.

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    Published on: October 13, 2017

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    Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

    Published on: April 24, 2014

    Area of Science:

    • Laser Physics
    • Spectroscopy
    • Physical Chemistry

    Background:

    • Excimer lasers, particularly ArF* (193-nm), are crucial for photolithography and scientific research.
    • Achieving high energy, narrow bandwidth, and tunability simultaneously in excimer sources presents significant technical challenges.

    Purpose of the Study:

    • To develop and characterize a tunable ArF* (193-nm) excimer laser source.
    • To demonstrate precise control over tunability, spectral bandwidth, and mode characteristics.

    Main Methods:

    • Utilized an ArF* excimer-amplifier system.
    • Employed injection seeding with the fourth anti-Stokes line of a frequency-doubled dye laser in H(2).
    • Characterized output energy, spectral width, and tunability.

    Main Results:

    • Achieved a peak output of over 125 mJ/pulse at 10 pulses/sec.
    • Demonstrated a spectral width of less than 2 cm(-1).
    • Showcased a tunability range of nearly 320 cm(-1) between 192.8 and 193.9 nm.

    Conclusions:

    • The developed ArF* excimer source provides a powerful and tunable platform for advanced laser applications.
    • Injection seeding is an effective method for controlling tunability, bandwidth, and mode properties of ArF* excimer lasers.