Power amplification for 1.6â
µm high-order vortex modes.
Opt Express
; 31(21): 35305-35312, 2023 Oct 09.
Article
em En
| MEDLINE
| ID: mdl-37859265
ABSTRACT
1.6â
µm high-order vortex modes carrying orbital angular momentums (OAMs) play significant roles in long-range Doppler lidars and other remote sensing. Amplification of 1.6â
µm high-order vortex modes is an important way to provide high-power laser sources for such lidars and also enable the weak echo signal to be amplified so that it can be analyzed. In this work, we propose a four-pass ErYAG vortex master-oscillator-power-amplification (MOPA) system to amplify 1.6â
µm high-order vortex modes. In the proof-of-concept experiments, 1.6â
µm single OAM mode (l = 3) is amplified successfully and the gain ranging from 1.88 to 2.36 is achieved. Multiplexed OAM mode (l=±3) is also amplified with favorable results. This work addresses the issue as the low gain of ErYAG vortex MOPA, which provides a feasible path for 1.6â
µm high-order vortex modes amplification.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article