Air-core fiber or photonic-crystal rod, which is more suitable for energetic femtosecond pulse generation and three-photon microscopy at the 1700-nm window?

Mengyao Gan; Chen He; Hongji Liu; Ziwei Zhuang; Ping Qiu; Ke Wang

doi:10.1002/jbio.201900069

Air-core fiber or photonic-crystal rod, which is more suitable for energetic femtosecond pulse generation and three-photon microscopy at the 1700-nm window?

J Biophotonics. 2019 Oct;12(10):e201900069. doi: 10.1002/jbio.201900069. Epub 2019 Jun 13.

Authors

Mengyao Gan¹, Chen He¹, Hongji Liu¹, Ziwei Zhuang¹, Ping Qiu¹, Ke Wang¹

Affiliation

¹ Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China.

PMID: 31194292
DOI: 10.1002/jbio.201900069

Abstract

Energetic femtosecond pulses at the 1700-nm window are a prerequisite for deep-tissue three-photon microscopy (3PM). Soliton self-frequency shift (SSFS) in photonic-crystal (PC) rod has been the only technique to generate such pulses suitable for 3PM. Here we demonstrate through SSFS in an air-core fiber, we can generate most energetic femtosecond soliton pulses at the 1700-nm window, 5.2 times higher than that from PC rod. However, the air-core soliton pulse width is 5.9 times longer than that of PC rod soliton. Based on comparative 3PM excited with both air-core and PC rod solitons, we propose the more suitable source for 3PM. We further elucidate the challenge of generating shorter soliton pulses from air-core fibers through numerical simulation.

Keywords: 3-photon microscopy; air-core fiber; photonic-crystal rod; soliton self-frequency shift.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Air*
Feasibility Studies
Microscopy, Fluorescence, Multiphoton / methods*
Optical Phenomena*
Photons*

Abstract

Publication types

MeSH terms

Grants and funding