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Updated: Aug 2, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Complete characterization of periodic optical sources by use of sampled test-plus-reference interferometry
1Bell Laboratories-Lucent Technologies, 791 Holmdel-Keyport Road, Holmdel, New Jersey 07733, USA. dorrer@lucent.com
Optics Letters
|August 12, 2005
Summary
A novel interferometric technique precisely measures optical source electric fields in real-time. This method excels at distinguishing coherent signals from background noise, even when sources differ.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Spectroscopy
Background:
- Characterizing optical sources is crucial for various scientific and technological applications.
- Existing test-plus-reference techniques like spectral interferometry have limitations, particularly when signals originate from different sources.
Purpose of the Study:
- To present a new interferometric technique for measuring the time-dependent electric field of periodic optical sources.
- To offer a sensitive method for real-time optical source characterization and signal extraction.
Main Methods:
- Utilizes interference between the optical source and a reference source of short optical pulses.
- Applies interferometry to measure the time-dependent electric field, applicable even when test and reference signals are from different origins.
Main Results:
- Demonstrates high sensitivity in measuring optical electric fields.
- Enables direct, real-time characterization of optical sources.
- Successfully extracts coherent periodic signals from incoherent backgrounds.
Conclusions:
- The presented interferometric technique offers a significant advancement over existing methods.
- It provides a versatile and sensitive tool for analyzing complex optical signals and sources.
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