Real time noise and wavelength correlations in octave-spanning supercontinuum generation

Godin, Thomas; Wetzel, Benjamin; Sylvestre, Thibaut; Larger, Laurent; Kudlinski, Alexandre; Mussot, Arnaud; Salem, Amine Ben; Zghal, Mourad; Genty, Goëry; Dias, Frédéric; Dudley, John M.

doi:10.1364/oe.21.018452

Cited by 91 publications

(71 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These are a result of the filamentation process and have been studied in bulk [7,14], gases [15,16], and fibers [17][18][19][20][21] to get a better understanding of the involved processes in continuum generation or of the sensitivity of transient spectrometers [7].…”

Section: Continuum Generation and Transient Pump-probe Spectroscopymentioning

confidence: 99%

Temporal and spectral correlations in bulk continua and improved use in transient spectroscopy

Bradler

Riedle

2014

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

Newly generated frequencies during bulk continuum generation with femtosecond pump pulses do not fluctuate statistically and show strong correlations in spectrum and time. When a femtosecond continuum is used as probe light for transient spectroscopic measurements, these correlations result in a seemingly low noise level but largescale pseudo-structures that obscure the interpretation. We investigate the correlations for continua generated in YAG and calcium fluoride plates and incorporate the results into the design of our pump-probe setup. The high degree of correlation to the next pulse is utilized through chopping of the pump and referencing between successive laser shots. To suppress the adverse effect of the high degree of correlation to other wavelengths, we extend the detection by multichannel referencing with a second camera. The combination of both referencing schemes renders a precise spectral calibration unnecessary and increases the sensitivity of our spectrometer by a factor of 5 down to 20 μOD. This is already very close to the shot noise limit. To demonstrate the improvements, we present and discuss measurements on two different molecular solutions.

show abstract

Section: Continuum Generation and Transient Pump-probe Spectroscopymentioning

confidence: 99%

Temporal and spectral correlations in bulk continua and improved use in transient spectroscopy

Bradler

Riedle

2014

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

show abstract

“…Similar approaches have been used in conjunction with the real-time spectral measurement based on Dispersive Fourier Transformation (DFT)25, to reveal underlying spectral correlations in supercontinuum generation26, and also correlations between the sidebands in conventional modulation instability27. As DFT-based spectral measurement can be used only for pulsed generation, the FPI-based configuration offers a complementary route for studying such correlations over a wide variety of continuous and quasi-continuous wave systems.…”

Section: Resultsmentioning

confidence: 99%

Spectral correlations in a random distributed feedback fibre laser

2017

View full text Add to dashboard Cite

Random distributed feedback fibre lasers belong to the class of random lasers, where the feedback is provided by amplified Rayleigh scattering on sub-micron refractive index inhomogenities randomly distributed over the fibre length. Despite the elastic nature of Rayleigh scattering, the feedback mechanism has been insofar deemed incoherent, which corresponds to the commonly observed smooth generation spectra. Here, using a real-time spectral measurement technique based on a scanning Fabry-Pérot interferometer, we observe long-living narrowband components in the random fibre laser's spectrum. Statistical analysis of the ∼104 single-scan spectra reveals a preferential interspacing for the components and their anticorrelation in intensities. Furthermore, using mutual information analysis, we confirm the existence of nonlinear correlations between different parts of the random fibre laser spectra. The existence of such narrowband spectral components, together with their observed correlations, establishes a long-missing parallel between the fields of random fibre lasers and conventional random lasers.

show abstract

“…Different figures of merit, e.g. the two-frequency correlation function [52] or higher-order correlations [53] can be studied too, but this is a topic beyond the scope of this work. The brackets above denote ensemble averaging.…”

Section: Numerical Resultsmentioning

confidence: 99%

Comparative analysis of spectral coherence in microresonator frequency combs

2014

View full text Add to dashboard Cite

Abstract:Microresonator combs exploit parametric oscillation and nonlinear mixing in an ultrahigh-Q cavity. This new comb generator offers unique potential for chip integration and access to high repetition rates. However, time-domain studies reveal an intricate spectral coherence behavior in this type of platform. In particular, coherent, partially coherent or incoherent combs have been observed using the same microresonator under different pumping conditions. In this work, we provide a numerical analysis of the coherence dynamics that supports the above experimental findings and verify particular design rules to achieve spectrally coherent microresonator combs. A particular emphasis is placed in understanding the differences between so-called Type I and Type II combs. and T. W. Hänsch, "Direct link between microwave and optical frequencies with a 300 THz femtosecond laser comb," Phys. Rev. Lett. 84, 5102-5105 (2000). 3. T. W. Hänsch, "Nobel Lecture: Passion for precision," Rev. Mod. Phys. 78, 1297-1309(2006. 4. N. R. Newbury, "Searching for applications with a fine-tooth comb," Nature Photon. 5, 186-188 (2011). 5. V. Torres-Company and A. M. Weiner, "Optical frequency comb technology for ultra-broadband radio-frequency photonics," Laser and Photon. Rev. (in press, 2013). DOI 10.1002/lpor201300126. 6. T. J. Kippenberg, R. Holzwarth, and S. A. Diddams, "Microresonator-based optical frequency combs," Science 332, 555-559 (2011). 145-152 (2014). 43. F. Leo, S. Coen, P. Kockaert, S. P. Goza, P. Emplit, and M. Haelterman, "Temporal cavity solitons in onedimensional Kerr media as bits in an all-optical buffer," Nat. Photonics 4, 471-476 (2010). 44. H. Lajunen, V. Torres-Company, J. Lancis, E. Silvestre, and P. Andres, "Pulse-by-pulse method to characterize partially coherent pulse propagation in instantaneous nonlinear media," Opt. Express 18, 14979-14991 (2010). 45. M. Erkintalo and S. Coen, "Coherence properties of Kerr frequency combs," Opt. Lett. 39, 283-286 (2014). 46. M. Haelterman, S. Trillo, and S. Wabnitz, "Additive-modulation-instability ring laser in the normal dispersion regime of a fiber," Opt. Lett. 17, 745-747 (1992). 47. I. V. Barashenkov and Y. S. Smirnov, "Existence and stability chart for the ac-driven, damped nonlinear Schrodinger solitons," Phys. Rev. E 54, 5707-5725 (1996)

show abstract

Real time noise and wavelength correlations in octave-spanning supercontinuum generation

Cited by 91 publications

References 17 publications

Temporal and spectral correlations in bulk continua and improved use in transient spectroscopy

Temporal and spectral correlations in bulk continua and improved use in transient spectroscopy

Spectral correlations in a random distributed feedback fibre laser

Comparative analysis of spectral coherence in microresonator frequency combs

Contact Info

Product

Resources

About