Delivery of nanosecond laser pulses by multi-mode anti-resonant hollow core fiber at 1â
µm wavelength.
Opt Express
; 32(10): 17229-17238, 2024 May 06.
Article
en En
| MEDLINE
| ID: mdl-38858912
ABSTRACT
In this paper we explore the application of low-loss multimode anti-resonant hollow-core fiber (MM-AR-HCF) in the delivery of nanosecond laser pulses at 1â
µm wavelength. MM-AR-HCF with large core offers a rich content of low-loss higher-order modes which plays a key role in the efficient coupling and transmission of high-power laser of low beam quality. In the experiment, laser pulses of an average pulse energy of 21.8 mJ with 14.6â
ns pulse width (corresponding a peak power of 1.49â
MW) are transmitted through MM-AR-HCF of 9.8 m length without damage. 85% transmission efficiency is achieved where the incident laser beam suffers a low beam quality with M2 x and M2 y of 2.18 and 1.99 respectively. Laser-induced damage threshold (LIDT) of MM-AR-HCF was measured to be 22.6 mJ for 85% transmission efficiency, which is 7 times higher than that for a multimode silica optical fiber with a large core of 200â
µm.
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Colección:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Express
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Opt. express
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Optics express
Asunto de la revista:
OFTALMOLOGIA
Año:
2024
Tipo del documento:
Article