Several physical mechanisms influence the self-phasing of passive coherently combined laser systems, including wavelength tuning, the Kramers-Kronig (KK) effect, the optical Kerr effect, regenerative feedback, and spatial mode selection. Beam recycling, a concept introduced in the modal analysis of a Michelson cavity, applies feedback to waste energy from the coherent combination process to introduce a second supermode in the cavity . Experiments using a polarization-multiplexed cavity showed that the output power is less sensitive to gain arm path length changes when beam recycling is used . Self-phasing mechanisms including beam recycling appear to have also been applied in a ring laser array . Here, we present an experiment which isolates the beam recycling effect in a fiber laser with two separate gain media and show improved laser performance when recycling is implemented.
|Original language||English (US)|
|Title of host publication||The European Conference on Lasers and Electro-Optics, CLEO_Europe_2019|
|Publisher||OSA - The Optical Society|
|State||Published - 2019|
|Event||The European Conference on Lasers and Electro-Optics, CLEO_Europe_2019 - Munich, Germany|
Duration: Jun 23 2019 → Jun 27 2019
|Name||Optics InfoBase Conference Papers|
|Volume||Part F140-CLEO_Europe 2019|
|Conference||The European Conference on Lasers and Electro-Optics, CLEO_Europe_2019|
|Period||6/23/19 → 6/27/19|
Bibliographical notePublisher Copyright:
© 2019 IEEE
Copyright 2020 Elsevier B.V., All rights reserved.