Related Experiment Video
Updated: Jun 20, 2026
14:18
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Observation of mode locking in a synchronously pumped Nd:YAG laser
C J Flood1, G Giuliani, H M van Driel
1Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada.
Optics Letters
|September 18, 2009
Summary
This study explores mode-locking in a Nd:YAG ring oscillator, achieving stable operation with minimal gain modulation. Results suggest a new method for mode-locking rare-earth waveguide lasers.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Mode-locking is crucial for generating ultrashort laser pulses.
- Nd:YAG lasers are widely used in various scientific and industrial applications.
Purpose of the Study:
- To investigate the mode-locking behavior of a Nd:YAG ring oscillator.
- To explore a novel mode-locking technique for rare-earth waveguide lasers.
Main Methods:
- Synchronous pumping of a 1.06-microm Nd:YAG ring oscillator using a 76-MHz, 20-psec dye laser at 0.59 microm.
- Analysis of gain modulation based on relaxation dynamics with a time constant of 470 psec.
Main Results:
- Stable mode-locked operation achieved with a low gain modulation of 10(-4).
- Minimum pulse width of 140 psec obtained.
Conclusions:
- Demonstrated efficient mode-locking in a Nd:YAG ring laser with minimal gain modulation.
- Proposed a novel approach for mode-locking rare-earth waveguide lasers, potentially advancing ultrafast optics.
Related Concept Videos
01:22MOSFET: Enhancement Mode
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
01:11Atomic Nuclei: Larmor Precession Frequency
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession, and the angular frequency...