Laser frequency locking and intensity normalization in wavelength modulation spectroscopy for sensitive gas sensing

Related Experiment Video

Updated: Jan 27, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

8.0K

Guishi Wang, Jiaoxu Mei, Xing Tian

    Optics Express
    |March 17, 2019
    PubMed

    More Related Videos

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    12.6K
    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.9K

    Related Concept Videos

    The de Broglie Wavelength02:32

    The de Broglie Wavelength

    In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
    33.5K
    Variation: Normal Distribution, Range, and Standard Deviation02:32

    Variation: Normal Distribution, Range, and Standard Deviation

    In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
    27.6K
    Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules02:34

    Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules

    The test of the kinetic molecular theory (KMT) and its postulates is its ability to explain and describe the behavior of a gas. The various gas laws (Boyle’s, Charles’s, Gay-Lussac’s, Avogadro’s, and Dalton’s laws) can be derived from the assumptions of the KMT, which have led chemists to believe that the assumptions of the theory accurately represent the properties of gas molecules.
    37.4K
    Self-Locking Screw01:16

    Self-Locking Screw

    A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
    A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
    2.5K
    The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

    The Sense of Self: Reflected Self-Appraisal and Social Comparison

    According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
    55.9K
    Gas Exchange and Transport01:20

    Gas Exchange and Transport

    Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.
    76.8K