Coherent modes in a random fibre laser (Conference Presentation)

Dmitry V. Churkin; Srikanth Sugavanam; Mariia Sorokina

doi:10.1117/12.2289603

14 March 2018 Coherent modes in a random fibre laser (Conference Presentation)

Dmitry V. Churkin, Srikanth Sugavanam, Mariia Sorokina

Proceedings Volume 10517, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications III; 105170O (2018) https://doi.org/10.1117/12.2289603
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Random fibre lasers constitute 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. It is known than the nature of Rayleigh scattering is elastic. However, as the laser generates a smooth spectra, the feedback mechanism in random fibre lasers has been assumed to be incoherent. In the present talk we will use a real-time spectral measurement technique based on a scanning Fabry-Perot interferometer to reveal fast dynamics of the random fibre laser spectrum. We observe long-living narrowband components in the generation spectrum, and make a statistical analysis of a large number single-scan spectra to reveal a preferential interspacing between narrow-components. Further, we will discuss the results of advanced real-time spectral measurements via heterodyne-based measurements. We will show that ultra-narrow spectral components (with spectral width down to 1 kHz) are generated. 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.

Conference Presentation

Citation Download Citation

Dmitry V. Churkin, Srikanth Sugavanam, and Mariia Sorokina "Coherent modes in a random fibre laser (Conference Presentation)", Proc. SPIE 10517, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications III, 105170O (14 March 2018); https://doi.org/10.1117/12.2289603

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Fiber lasers

Random lasers

Rayleigh scattering

Fabry–Perot interferometry

Refractive index

Statistical analysis

Keywords/Phrases

Search In:

Publication Years