Control of femtosecond multi-filamentation in glass by designable patterned optical fields

Autor: Ping-Ping Li, Meng-Qiang Cai, Jia-Qi Lü, Dan Wang, Gui-Geng Liu, Sheng-Xia Qian, Yongnan Li, Chenghou Tu, Hui-Tian Wang
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: AIP Advances, Vol 6, Iss 12, Pp 125103-125103-10 (2016)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/1.4971427
Popis: We present a scheme for realizing femtosecond multi-filamentation with designable quantity and locations of filaments, based on the control of multi-focal spots formed by patterned optical fields (POFs) composed of multiple individual optical fields (IOFs). A computer-controlled spatial light modulator is used to engineer the POFs. In particular, we introduce a blazed phase grating in any IOF, which increases a degree of freedom, making the engineering of multi-focal spots becomes more flexible. We achieve experimentally the aim controlling femtosecond multi-filamentation in a K9 glass. Our scheme has great flexibility and convenience in controlling the multi-filamentation in quantity and locations of filaments and strength of interaction between filaments.
Databáze: Directory of Open Access Journals