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Broadband high-energy all-fiber laser at 1.6 μm

Kang, Jiqiang and Kong, Cihang and Feng, Pingping and Wei, Xiaoming and Luo, Zhi-Chao and Lam, Edmund Y. and Wong, Kenneth K. Y. (2018) Broadband high-energy all-fiber laser at 1.6 μm. IEEE Photonics Technology Letters, 30 (4). pp. 311-314. ISSN 1041-1135. http://resolver.caltech.edu/CaltechAUTHORS:20180103-150623024

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Abstract

A broadband high-energy all-fiber laser at 1.6-μm window with erbium-doped fiber mode locked by nonlinear polarization rotation technology is demonstrated. The direct output optical spectrum centered at 1.6 μm has a bandwidth of 52.4 nm. The fiber laser delivers a pulse energy of 3.9 nJ with 9.3-MHz repetition rate at 220-mW 976-nm pump power. Based on it, a wavelength-tunable optical source with wavelength tuning range from 1.6 μm to 1.8 μm is demonstrated through soliton self-frequency shift. To satisfy much longer wavelength demands in some special application scenario, e.g. deep brain imaging with multi-photon microscopy, a chirped pulse amplifier was constructed to boost the pulse energy to 14 nJ, and the wavelength can be tuned from 1.6 μm to 1.94 μm with those amplified pulses. These fiber sources at L-band and longer wavelength can explore a wider scope in deep bio-tissue imaging area for lower water absorption.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/LPT.2017.2786461DOIArticle
http://ieeexplore.ieee.org/document/8240981PublisherArticle
ORCID:
AuthorORCID
Kang, Jiqiang0000-0002-5792-7259
Kong, Cihang0000-0002-8551-6959
Luo, Zhi-Chao0000-0003-1692-2678
Wong, Kenneth K. Y.0000-0003-3668-3539
Additional Information:© 2017 IEEE. Manuscript received December 5, 2017; revised December 19, 2017; accepted December 19, 2017. Date of publication December 27, 2017; date of current version January 29, 2018. This work was supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Nos. HKU 17205215, HKU 17208414, and CityU T42-103/16-N) and National Natural Science Foundation of China (N_HKU712/16); Innovation and Technology Fund (GHP/050/14GD); and University Development Fund of HKU.
Funders:
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative RegionHKU 17205215
Research Grants Council of the Hong Kong Special Administrative RegionHKU 17208414
Research Grants Council of the Hong Kong Special Administrative RegionCityU T42-103/16-N
National Natural Science Foundation of ChinaN_HKU712/16
National Natural Science Foundation of ChinaGHP/050/14GD
Hong Kong UniversityUNSPECIFIED
Subject Keywords:Erbium doped fiber, mode-locked fiber laser, chirped pulse amplifier, soliton self-frequency shift
Record Number:CaltechAUTHORS:20180103-150623024
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180103-150623024
Official Citation:J. Kang et al., "Broadband High-Energy All-Fiber Laser at 1.6 mu m," in IEEE Photonics Technology Letters, vol. 30, no. 4, pp. 311-314, Feb.15, 15 2018. doi: 10.1109/LPT.2017.2786461
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84068
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Jan 2018 23:32
Last Modified:02 Feb 2018 23:48

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