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Related Experiment Video

Updated: May 10, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Performing MHz-Level Repetition Rate Tuning for Coherent Dual-Microcomb Interferometry.

Enqi Yan¹, Mingliang Peng¹, Jian Tang¹

¹College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

|April 26, 2025

Summary

This summary is machine-generated.

This study presents a novel method for tuning microcomb repetition rates, crucial for high-precision dual-microcomb interferometry. This advancement enhances measurement speed and precision in applications like spectroscopy and ranging.

Keywords:

coherent dual comb interferogram thermal control tunable repetition rate

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Published on: December 15, 2021

Area of Science:

Optics and Photonics
Precision Measurement
Laser Technology

Background:

Dual-microcomb interferometry offers high precision and speed for spectroscopy and ranging.
Tuning microcomb repetition rates is essential for optimizing dual-microcomb systems and improving measurement performance.

Purpose of the Study:

To demonstrate a coherent dual-microcomb system with tunable repetition rates.
To enable MHz-level repetition rate tuning for enhanced dual-comb applications.

Main Methods:

Utilized a single continuous-wave fiber laser at 1560.49 nm to drive the dual-microcomb system.
Employed a hybrid tuning approach combining single-sideband (SSB) modulation for precision pump frequency control and thermal control for coarse tuning.
Achieved continuous repetition rate tuning over a 4.34 MHz range.

Main Results:

Demonstrated a linear relationship between repetition rate and pump modulation frequency with a coefficient of 143.58 kHz/GHz.
Enabled MHz-level repetition rate tuning, significantly easing microresonator fabrication and pairing requirements.
Showcased the system's potential for advanced spectroscopy and high-speed ranging.

Conclusions:

The developed hybrid tuning method provides precise and flexible control over microcomb repetition rates.
This advancement is highly valuable for applications in gas detection, satellite formation flying, and other precision measurement fields.
The ability to tune repetition rates relaxes constraints, paving the way for more accessible and performant dual-microcomb systems.