Experimental and theoretical study of noise in a dual-frequency VECSEL

Syamsundar De; Abdelkrim El Amili; Grégoire Pillet; Ghaya Baili; Fabienne Goldfarb; Mehdi Alouini; Isabelle Sagnes; Fabien Bretenaker

doi:10.1117/12.2038934

3 March 2014 Experimental and theoretical study of noise in a dual-frequency VECSEL

Syamsundar De, Abdelkrim El Amili, Grégoire Pillet, Ghaya Baili, Fabienne Goldfarb, Mehdi Alouini, Isabelle Sagnes, Fabien Bretenaker

Author Affiliations +

Proceedings Volume 8966, Vertical External Cavity Surface Emitting Lasers (VECSELs) IV; 89660M (2014) https://doi.org/10.1117/12.2038934
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

We investigate, both experimentally and theoretically, the spectral behavior of the intensity noises as well as the phase noise of the radio frequency (RF) beatnote generated by optical mixing of two orthogonally polarized modes of a dual-frequency VECSEL. To be more speci c, we measure the relative intensity noises (RINs) and the correlation between the intensity noises of the two laser modes for di erent nonlinear coupling strengths between them within frequencies 10 kHz to 50 MHz. Moreover for these frequencies, we explore the spectral behavior of the phase noise of the RF beatnote generated by optical mixing of two laser modes and the dependence of this RF phase noise spectrum on the strength of non-linear coupling between the laser modes. The theoretical model considers pump intensity uctuations as the only source of noise within the considered frequency range. The pump uctuations, entering into the two spatially separated laser modes on the active medium, are measured to be white noises of identical amplitudes, partially correlated, and in phase. To model the RF phase noise, we take into account two di erent physical mechanisms: (i) the coupling of intensity noise with phase noise due to large Henry factor of the semiconductor gain medium and (ii) the thermal uctuations of the refractive index of the semiconductor active medium induced by pump intensity uctuations. For all the results, theory shows very good agreement with the experiment.

Citation Download Citation

Syamsundar De, Abdelkrim El Amili, Grégoire Pillet, Ghaya Baili, Fabienne Goldfarb, Mehdi Alouini, Isabelle Sagnes, and Fabien Bretenaker "Experimental and theoretical study of noise in a dual-frequency VECSEL", Proc. SPIE 8966, Vertical External Cavity Surface Emitting Lasers (VECSELs) IV, 89660M (3 March 2014); https://doi.org/10.1117/12.2038934

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