A practical topological insulator saturable absorber for mode-locked fiber laser

A novel saturable absorber (SA) was fabricated by coating the topological insulator (TI) film on microfiber using pulsed laser deposition (PLD) method. The TISA device had an insertion loss of ~1.25 dB, a saturable intensity of 26.7 MW/cm(2), a modulation depth of ~5.7%, and a nonsaturable loss of 2...

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Detalles Bibliográficos
Autores principales: Yan, Peiguang, Lin, Rongyong, Ruan, Shuangchen, Liu, Aijiang, Chen, Hao, Zheng, Yuequn, Chen, Sifan, Guo, Chunyu, Hu, Juguang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4346808/
https://www.ncbi.nlm.nih.gov/pubmed/25732598
http://dx.doi.org/10.1038/srep08690
Descripción
Sumario:A novel saturable absorber (SA) was fabricated by coating the topological insulator (TI) film on microfiber using pulsed laser deposition (PLD) method. The TISA device had an insertion loss of ~1.25 dB, a saturable intensity of 26.7 MW/cm(2), a modulation depth of ~5.7%, and a nonsaturable loss of 20.5%. Upon employing this SA device, we established a passively mode-locked EDFL and achieved nearly free-chirped soliton pulse with 286 fs of pulse duration and >73 dB of signal to noise ratio (SNR). This result clearly evidences that the PLD is an effective scheme for practical SA device fabrication.

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