Related Experiment Video
Updated: Jul 17, 2025
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
11.6K
Self-started Kerr-lens mode-locked thin-disk oscillator
Optics Letters
|September 1, 2023
Summary
This study demonstrates a self-starting Kerr-lens mode-locked Yb:YAG thin-disk oscillator. It achieved 49 W of power and 1.05 µJ pulse energy, the highest for self-started oscillators.
Area of Science:
- Laser Physics
- Optics
Background:
- Kerr-lens mode-locking (KLM) is crucial for generating high-power femtosecond pulses.
- Thin-disk oscillators are a key platform for high-power laser systems.
Purpose of the Study:
- To demonstrate a self-starting Kerr-lens mode-locked Yb:YAG thin-disk oscillator.
- To achieve high pulse energy and power from such a system.
- To introduce a novel method for initiating KLM.
Main Methods:
- Implementation of Kerr-lens mode-locking in a Yb:YAG thin-disk laser.
- Operation under two distinct configurations to optimize performance.
- Utilizing optical perturbation as a new method to initiate mode-locking.
Main Results:
- Achieved self-starting Kerr-lens mode-locking in the Yb:YAG thin-disk oscillator.
- Delivered 13-W, 235-fs pulses at 103 MHz in the first configuration.
- Delivered 49-W pulses at 46.5 MHz with 1.05 µJ pulse energy in the second configuration.
- The 1.05 µJ pulse energy represents a record for self-started KLM oscillators.
Conclusions:
- The demonstrated Yb:YAG thin-disk oscillator offers high-power, high-energy femtosecond pulse generation.
- Self-starting KLM is achievable in thin-disk oscillators, simplifying their operation.
- Optical perturbation provides a new avenue for initiating mode-locking in laser systems.
More Related Videos
Related Concept Videos
01:30Oscillations In An LC Circuit
2.3K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
2.3K
01:30RLC Circuit as a Damped Oscillator
1.1K
An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
1.1K
01:23Faraday Disk Dynamo
2.3K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.3K
01:17Design Example: Underdamped Parallel RLC Circuit
329
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
Starting with a fixed...
329
01:06Forced Oscillations
6.6K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
6.6K
01:22MOSFET: Enhancement Mode
378
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...
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...
378