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Flexible pulse-stretching for a swept source at 2.0 μm using free-space angular-chirp-enhanced delay

Tan, Sisi and Wei, Xiaoming and Wu, Jianglai and Yang, Lingxiao and Tsia, Kevin K. and Wong, Kenneth K. Y. (2018) Flexible pulse-stretching for a swept source at 2.0 μm using free-space angular-chirp-enhanced delay. Optics Letters, 43 (1). pp. 102-105. ISSN 0146-9592. https://resolver.caltech.edu/CaltechAUTHORS:20180111-134220472

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Abstract

Dispersive pulse-stretching at 2.0 μm has long been hindered by the high intrinsic optical loss from conventional dispersive media. Here a flexible pulse-stretching technique at 2.0 μm is demonstrated over a broad bandwidth with large-scale dispersion and low intrinsic optical loss. The technique employs the newly proposed pulse-stretching scheme, namely, free-space angular-chirp-enhanced delay. Both normal and anomalous temporal dispersion (up to ±500  ps/nm) with low intrinsic loss (<6  dB) over a spectral bandwidth of ∼84  nm at 2.0 μm is obtained with low nonlinear effects. Based on this method, an optical wavelength-swept source at 2.0 μm is realized and applied to spectrally encoded imaging at a line scan rate of ∼19  MHz, proving the potential of this pulse-stretching technique for continuous single-shot measurements at the 2.0 μm wavelength regime, particularly for optical microscopy and spectroscopy.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1364/OL.43.000102DOIArticle
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-43-1-102PublisherArticle
ORCID:
AuthorORCID
Wei, Xiaoming0000-0001-6136-5335
Wu, Jianglai0000-0003-1153-6655
Wong, Kenneth K. Y.0000-0003-3668-3539
Additional Information:© 2017 Optical Society of America. Received 16 October 2017; revised 17 November 2017; accepted 22 November 2017; posted 30 November 2017 (Doc. ID 309098); published 22 December 2017. Funding: Research Grants Council of the Hong Kong Special Administrative Region, China (CityU T42-103/16-N, HKU 17205215, HKU 17208414); National Natural Science Foundation of China (NSFC) (N_HKU712/16); Innovation and Technology Commission (ITF) (GHP/050/14GD).
Funders:
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative RegionCityU T42-103/16-N
Research Grants Council of the Hong Kong Special Administrative RegionHKU 17205215
Research Grants Council of the Hong Kong Special Administrative RegionHKU 17208414
National Natural Science Foundation of ChinaN_HKU712/16
National Natural Science Foundation of ChinaGHP/050/14GD
Issue or Number:1
Classification Code:OCIS codes: (260.2030) Dispersion; (140.3600) Lasers, tunable; (170.7160) Ultrafast technology
Record Number:CaltechAUTHORS:20180111-134220472
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180111-134220472
Official Citation:Sisi Tan, Xiaoming Wei, Jianglai Wu, Lingxiao Yang, Kevin K. Tsia, and Kenneth K. Y. Wong, "Flexible pulse-stretching for a swept source at 2.0  μm using free-space angular-chirp-enhanced delay," Opt. Lett. 43, 102-105 (2018)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84269
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:11 Jan 2018 23:39
Last Modified:09 Mar 2020 13:19

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