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Updated: Jun 20, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Fiber-assisted single-photon spectrograph.

Malte Avenhaus¹, Andreas Eckstein, Peter J Mosley

¹Max-Planck Institute for the Science of Light, Junior Research Group IQO, Erlangen, Germany. malte.avenhaus@mpl.mpg.de

|September 17, 2009

Summary

This summary is machine-generated.

We developed a fiber-integrated spectrograph using group velocity dispersion (GVD) to precisely measure single-photon spectra. This technique recovers weak pulse spectra with high signal-to-noise ratio for telecommunication applications.

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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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Published on: November 22, 2019

Area of Science:

Quantum optics
Photonics engineering
Spectroscopy

Background:

Accurate spectral characterization of single photons is crucial for quantum information processing.
Traditional spectroscopy methods can be complex and challenging for weak light sources.
Fiber-based photon analysis offers miniaturization and integration potential.

Purpose of the Study:

To demonstrate a novel fiber-integrated spectrograph.
To utilize chromatic group velocity dispersion (GVD) for spectral resolution of single photons.
To analyze the joint spectral intensity distribution of parametric downconversion sources.

Main Methods:

Implementing a spectrograph within a single-mode fiber.
Employing GVD to temporally stretch ultrafast pulses.
Utilizing high-temporal-resolution single-photon counting modules.
Analyzing parametric downconversion at telecommunication wavelengths.

Main Results:

Spectral resolution of single photons in the time domain was achieved.
Weak pulse spectra were recovered with high signal-to-noise ratio.
Precise time measurements enabled accurate spectral recovery.
The technique was successfully applied to a parametric downconversion source.

Conclusions:

Fiber-integrated spectroscopy based on GVD is a viable technique for analyzing weak light.
This method offers high precision and signal-to-noise ratio for spectral measurements.
The approach has potential applications in quantum optics and telecommunications.