Related Experiment Video
Updated: Jul 16, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Tunable pulse repetition-rate multiplication using phase-only line-by-line pulse shaping
José Caraquitena1, Zhi Jiang, Daniel E Leaird
1School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907-2035, USA. jcaraqui@prudue.edu
Researchers developed an all-optical method for increasing laser pulse repetition rates. This technique achieves two-to-five-times multiplication of a 9 GHz source with high accuracy.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Mode-locked lasers are crucial for generating high-repetition-rate optical pulses.
- Existing methods for repetition-rate multiplication can be complex or limited in tunability.
Purpose of the Study:
- To demonstrate a novel all-optical method for tunable pulse repetition-rate multiplication.
- To achieve high-fidelity multiplication of a mode-locked laser's output.
Main Methods:
- Utilized spectral line-by-line control for optical manipulation of laser pulses.
- Implemented an all-optical setup for repetition-rate multiplication.
Main Results:
- Successfully demonstrated two-to-five-times repetition-rate multiplication.
- Achieved multiplication of a 9 GHz optical source with very high fidelity.
Conclusions:
- The proposed all-optical method offers a versatile and high-fidelity approach to pulse repetition-rate multiplication.
- This technique has potential applications in high-speed optical signal processing and communications.
Related Concept Videos
Rectangular and Triangular Pulse Function
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Time and frequency -Domain Interpretation of Phase-lead Control
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
Phase-lead and Phase-lag Controllers
Upsampling

