Real-time high-resolution heterodyne-based measurements of spectral dynamics in fibre lasers
Srikanth Sugavanam,Simon J. Fabbri,Son Thai Le,Ivan A. Lobach,Sergey I. Kablukov,S. V. Khorev,Dmitry V. Churkin,Dmitry V. Churkin +7 more
Reads0
Chats0
TLDR
Fast, round-trip-resolved spectral dynamics of cavity-based systems in real-time are obtained, with temporal resolution of one cavity round trip and frequency resolution defined by its inverse (85 ns and 24 MHz respectively are demonstrated).Abstract:
Conventional tools for measurement of laser spectra (e.g. optical spectrum analysers) capture data averaged over a considerable time period. However, the generation spectrum of many laser types may involve spectral dynamics whose relatively fast time scale is determined by their cavity round trip period, calling for instrumentation featuring both high temporal and spectral resolution. Such real-time spectral characterisation becomes particularly challenging if the laser pulses are long, or they have continuous or quasi-continuous wave radiation components. Here we combine optical heterodyning with a technique of spatiooral intensity measurements that allows the characterisation of such complex sources. Fast, round-trip-resolved spectral dynamics of cavity-based systems in real-time are obtained, with temporal resolution of one cavity round trip and frequency resolution defined by its inverse (85 ns and 24 MHz respectively are demonstrated). We also show how under certain conditions for quasi-continuous wave sources, the spectral resolution could be further increased by a factor of 100 by direct extraction of phase information from the heterodyned dynamics or by using double time scales within the spectrogram approach.read more
Citations
More filters
Supercontinuum generation, photonic crystal fiber
TL;DR: In this article, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
Posted Content
Real time noise and wavelength correlations in octave-spanning supercontinuum generation
Thomas Godin,Benjamin Wetzel,Thibaut Sylvestre,Laurent Larger,Alexandre Kudlinski,Arnaud Mussot,A. Ben Salem,Mourad Zghal,Goëry Genty,Frédéric Dias,John M. Dudley +10 more
TL;DR: In this paper, the dispersive Fourier transformation was used to measure shot-to-shot spectral instabilities in femtosecond supercontinuum generation, and the results showed the clear advantages of dispersive wave generation for studying spectral noise during supercontinuity generation.
Journal ArticleDOI
Self-swept holmium fiber laser near 2100 nm
Jan Aubrecht,Pavel Peterka,Pavel Koška,Ondřej Podrazký,Filip Todorov,Pavel Honzatko,Ivan Kašík +6 more
TL;DR: Self-sweeping of laser wavelength corresponding to holmium emission near 2100 nm is reported, which is the first observation of self-swept fiber laser beyond 2000 nm.
Journal ArticleDOI
Unveiling multi-scale laser dynamics through time-stretch and time-lens spectroscopies
TL;DR: In this article, a real-time optical spectro-temporal analyzer (ROSTA) with three synchronized processing channels (i.e., multi-core) was proposed for single-shot studies on laser dynamics.
References
More filters
Book
Nonlinear Fiber Optics
TL;DR: The field of nonlinear fiber optics has advanced enough that a whole book was devoted to it as discussed by the authors, which has been translated into Chinese, Japanese, and Russian languages, attesting to the worldwide activity in the field.
Journal ArticleDOI
Supercontinuum generation in photonic crystal fiber
TL;DR: In this paper, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
Journal ArticleDOI
The physics and applications of random lasers
TL;DR: Lasing in disordered media presents both theoretical challenges and practical opportunities as mentioned in this paper, and both theoretical and practical challenges and opportunities are discussed in detail in Section 5.1.1].
Journal ArticleDOI
Dissipative solitons for mode-locked lasers
Philippe Grelu,Nail Akhmediev +1 more
TL;DR: In this paper, the concept of dissipative solitons and their application to high-energy mode-locked fiber laser cavities are discussed, and an outlook of the field is also provided.
Book
Time-frequency/time-scale analysis
TL;DR: This work presents a meta- Paradigm of Time-Frequency as a Paradigm, a Search for Solutions to this Problem, and some Preliminary Foundations of a Response to this problem.