Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Norton's Theorem01:14

Norton's Theorem

692
Norton's theorem is a fundamental principle stating that a linear two-terminal circuit can be substituted with an equivalent circuit, which comprises a current source (ⅠN) in parallel with a resistor (RN). Here, ⅠN represents the short-circuit current flowing through the terminals, and RN stands for the input or equivalent resistance at the terminals when all independent sources are deactivated. This implies that the circuit illustrated in Figure (a) can be exchanged with the...
692
Self-Locking Screw01:16

Self-Locking Screw

1.7K
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.
1.7K
Norton Equivalent Circuits01:16

Norton Equivalent Circuits

447
Norton's theorem is a fundamental concept in the field of electrical engineering that allows for the simplification of complex AC circuits. The theorem states that any two-terminal linear network can be replaced with an equivalent circuit that consists of an impedance, which is parallel with a constant current source. Figure 1 shows the AC circuit portioned into two parts: Circuit A and Circuit B, while Figure 2 depicts the circuit obtained by replacing Circuit A by its Norton equivalent...
447
Leaky Scanning02:28

Leaky Scanning

5.2K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.2K
Clamper Circuit01:14

Clamper Circuit

514
A clamper circuit, also known as a DC restorer, represents a specialized variant of the rectifier circuit, notable for its method of taking the output across the diode rather than the capacitor. This configuration lends to several distinctive applications, particularly in handling square wave inputs.
Within this circuit, the diode's orientation prompts the capacitor to charge up to the level of the most negative peak of the input signal. Upon reaching this state, the diode ceases to...
514
Underflow Gates01:30

Underflow Gates

95
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
95

You might also read

Related Articles

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

Sort by
Same author

Sub-part-per-trillion test of the Standard Model with atomic hydrogen.

Nature·2026
Same author

Ultrahigh-resolution spectral domain optical coherence tomography with a blue-diode-pumped Ti:sapphire laser and an axicon lens.

Biomedical optics express·2025
Same author

A compact frozen-spin trap for the search for the electric dipole moment of the muon.

The European physical journal. C, Particles and fields·2025
Same author

High-power thin-disk lasers emitting beams with axially-symmetric polarizations.

Nanophotonics (Berlin, Germany)·2024
Same author

Self-Shielding of X-ray Emission from Ultrafast Laser Processing Due to Geometrical Changes of the Interaction Zone.

Materials (Basel, Switzerland)·2024
Same author

Compact 20-pass thin-disk multipass amplifier stable against thermal lensing effects and delivering 330 mJ pulses with M2 < 1.17.

Optics express·2024

Related Experiment Video

Updated: Aug 12, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.8K

Pound-Drever-Hall locking scheme free from Trojan operating points.

Manuel Zeyen1, Lukas Affolter1, Marwan Abdou Ahmed2

  • 1Institute for Particle Physics and Astrophysics, ETH, 8093 Zurich, Switzerland.

The Review of Scientific Instruments
|February 1, 2023
PubMed
Summary
This summary is machine-generated.

This study refines the Pound-Drever-Hall (PDH) technique for laser frequency stabilization, introducing an "infinite" dynamic range. The enhanced PDH method ensures stable laser-to-resonator locking even after significant disturbances.

More Related Videos

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

10.8K
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

27.8K

Related Experiment Videos

Last Updated: Aug 12, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.8K
Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

10.8K
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

27.8K

Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Quantum Optics

Background:

  • The Pound-Drever-Hall (PDH) technique is a standard method for laser frequency stabilization to optical resonators.
  • Conventional PDH setups can suffer from limited dynamic range and unstable off-resonant lock points.

Purpose of the Study:

  • To propose and experimentally verify a modified Pound-Drever-Hall technique with an extended dynamic (capture) range.
  • To eliminate spurious off-resonant lock points in laser-to-resonator locking.

Main Methods:

  • Phase modulation of the seed laser at half the resonator's free spectral range.
  • Experimental validation using an injection-seeded Yb:YAG thin-disk laser.
  • Analytical formulation of the PDH error signal for arbitrary modulation frequencies.

Main Results:

  • Demonstration of an "infinite" dynamic range for laser-to-resonator locking.
  • Successful elimination of stable but off-resonant lock points (Trojan operating points).
  • Robust experimental verification of the enhanced PDH scheme.

Conclusions:

  • The proposed PDH refinement offers superior robustness and an extended capture range for laser frequency stabilization.
  • The technique is simple, requiring no additional electronics beyond standard PDH setups.
  • This method is highly suitable for injection-seeded lasers and optical parametric oscillators.