Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

As2S3–silica double-nanospike waveguide for mid-infrared supercontinuum generation

Not Accessible

Your library or personal account may give you access

Abstract

A double-nanospike As2S3–silica hybrid waveguide structure is reported. The structure comprises nanotapers at input and output ends of a step-index waveguide with a subwavelength core (1 μm in diameter), with the aim of increasing the in-coupling and out-coupling efficiency. The design of the input nanospike is numerically optimized to match both the diameter and divergence of the input beam, resulting in efficient excitation of the fundamental mode of the waveguide. The output nanospike is introduced to reduce the output beam divergence and the strong endface Fresnel reflection. The insertion loss of the waveguide is measured to be 2dB at 1550 nm in the case of free-space in-coupling, which is 7dB lower than the previously reported single-nanospike waveguide. By pumping a 3-mm-long waveguide at 1550 nm using a 60-fs fiber laser, an octave-spanning supercontinuum (from 0.8 to beyond 2.5 μm) is generated at 38 pJ input energy.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Coherent octave-spanning mid-infrared supercontinuum generated in As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser

Shangran Xie, Nikolai Tolstik, John C. Travers, Evgeni Sorokin, Celine Caillaud, Johann Troles, Philip St.J. Russell, and Irina T. Sorokina
Opt. Express 24(11) 12406-12413 (2016)

Broadband mid-infrared supercontinuum generation in dispersion-engineered As2S3-silica nanospike waveguides pumped by 2.8  μm femtosecond laser

Pan Wang, Jiapeng Huang, Shangran Xie, Johann Troles, and Philip St.J. Russell
Photon. Res. 9(4) 630-636 (2021)

Mid-infrared supercontinuum generation in As2S3-silica “nano-spike” step-index waveguide

N. Granzow, M. A. Schmidt, W. Chang, L. Wang, Q. Coulombier, J. Troles, P. Toupin, I. Hartl, K. F. Lee, M. E. Fermann, L. Wondraczek, and P. St.J. Russell
Opt. Express 21(9) 10969-10977 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved