"Displacement Measurement using Time-stretch Microwave Photonics with P" by Behzad Boroomandisorkhabi and Mina Esmaeelpour
 

Displacement Measurement using Time-stretch Microwave Photonics with Picosecond Laser Pulses

Abstract

Analyzing data and measuring microwave frequency and displacement with ultrafast lasers can be resource-intensive due to the substantial amount of data. As seen in current advanced techniques, achieving high resolution in both frequency and displacement necessitates using femtosecond or frequency comb lasers along with high-speed photodetectors. In this report, we designed a displacement measurement system using a picosecond laser source and an optical heterodyne detection transduction using dispersive elements to measure instantaneous frequency and displacement. A 140 MHz frequency resolution and a 1.02 MHz freuency precision corresponding to 3.56 μm displacement precision is achieved in measuring the instantaneous frequency of the interference signal, and consequently, the displacement of a mirror.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Dispersive interferometry; Time-stretch; Ultrafast metrology

International Standard Serial Number (ISSN)

0143-8166

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 Elsevier, All rights reserved.

Publication Date

01 Mar 2025

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