小芯径硫系玻璃光纤的制备及其非线性光学应用

doi:10.15541/jim20150229

无机材料学报 ›› 2016, Vol. 31 ›› Issue (2): 180-184.DOI: 10.15541/jim20150229

小芯径硫系玻璃光纤的制备及其非线性光学应用

郭威¹, 张斌¹, 翟诚诚¹, 祁思胜¹, 余懿², 杨安平¹, 李雷¹, 杨志勇¹,王荣平², 唐定远¹, 陶光明³, Luther-Davies Barry²

(1. 江苏省先进激光材料与器件重点实验室, 江苏师范大学物理与电子工程学院, 徐州221116; 2. Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2600, Australia; 3. CREOL, The College of Optics & Photonics, University of Central Florida, Orlando, Florida 32816, USA)

收稿日期:2015-05-11 修回日期:2015-06-18 出版日期:2016-02-20 网络出版日期:2016-01-15
作者简介:郭威(1989–), 男, 硕士研究生. E-mail: 15205233204@163.com
基金资助:
国家自然科学基金(61205207, 51303072, 61405080);江苏省高校自然科学基金(13KJB430013);江苏高校优势学科建设工程、江苏省先进激光技术与新兴产业协同创新中心资助项目

Fabrication and Application of Small Core Chalcogenide Glass Fibers in Nonlinear Optics

GUO Wei¹, ZHANG Bin¹, ZHAI Cheng-Cheng¹, QI Si-Sheng¹, YU Yi², YANG An-Ping¹, LI Lei¹, YANG Zhi-Yong¹, WANG Rong-Ping², TANG Ding-Yuan¹, TAO Guang-Ming³, LUTHER-DAVIES Barry²

(1. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China; 2. Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2600, Australia; 3. CREOL, The College of Optics & Photonics, University of Central Florida, Orlando, Florida 32816, USA)

Received:2015-05-11 Revised:2015-06-18 Published:2016-02-20 Online:2016-01-15
About author:GUO Wei. E-mail: 15205233204@163.com
Supported by:
National Natural Science Foundation of China (61205207, 51303072, 61405080);Natural Science Foundation of Colleges and Universities in Jiangsu Province (13KJB430013);Priority Academic Program Development of Jiangsu Higher Education Institutions and Jiangsu Collaborative Innovation Centre of Advanced Laser Technology and Emerging Industry

摘要/Abstract

摘要：

通过动态蒸馏提纯技术制备了高纯Ge-As-Se和Ge-As-S硫系玻璃。采用两步棒管法拉制了以Ge-As-Se玻璃为纤芯、Ge-As-S玻璃为包层的小芯径阶跃折射率光纤, 并使用飞秒激光抽运光纤测试了超连续谱的产生。以Al 和GaCl₃分别作为除氧剂和C/H纯化剂可以有效消除玻璃中的C、H和O杂质。制备的GeAsSe/GeAsS光纤在2~9 μm波段表现出优异的传输性能, 光纤数值孔径约为1.3; 采用重复频率为10.5 MHz、脉冲宽度为320 fs、中心波长为4.0 μm、峰值功率为4.6 kW激光抽运长度为22 cm、芯径为6 μm的光纤, 获得了覆盖1.9~8.2 μm、光谱平坦度为±10 dB、平均功率为4.5 mW的超连续谱。

关键词: 非线性光学, 硫系玻璃光纤, 中红外, 超连续谱产生

Abstract:

High purity Ge-As-Se and Ge-As-S chalcogenide glasses were synthesized by a dynamic distillation technique. Small-core step-index fibers with Ge-As-Se glass core and Ge-As-S glass cladding were fabricated through a two-step rod-in-tube approach. Supercontinuum generation was measured using a femtosecond laser as the pump. The impurities associated with C, H and O could be efficiently eliminated when Al and GaCl₃ were used as the oxygen getter and C/H scavenging agent, respectively. The as-fabricated GeAsSe/GeAsS fibers have a numerical aperture of ~1.3, and show good transmitting property in the 2-9 μm spectral range. When a 22 cm long fiber with a core diameter of 6 µm is pumped with 4.6 kW peak power and 320 fs pulses at a repetition rate of 10.5 MHz at 4.0 μm, supercontinuum spanning from ~1.9 to ~8.2 µm is generated with a dynamic range of ±10 dB and an average power of ~4.5 mW.

Key words: nonlinear optics, chalcogenide glass fibers, mid-infrared, supercontinuum generation

中图分类号:

TN213

郭威, 张斌, 翟诚诚, 祁思胜, 余懿, 杨安平, 李雷, 杨志勇,王荣平, 唐定远, 陶光明, Luther-Davies B. 小芯径硫系玻璃光纤的制备及其非线性光学应用[J]. 无机材料学报, 2016, 31(2): 180-184.

GUO Wei, ZHANG Bin, ZHAI Cheng-Cheng, QI Si-Sheng, YU Yi, YANG An-Ping, LI Lei, YANG Zhi-Yong, WANG Rong-Ping, TANG Ding-Yuan, TAO Guang-Ming, LUTHER-DAVIES Barry. Fabrication and Application of Small Core Chalcogenide Glass Fibers in Nonlinear Optics[J]. Journal of Inorganic Materials, 2016, 31(2): 180-184.

图/表 5

图1 Ge11.5As24Se64.5和Ge10As24S66玻璃的DSC曲线

Fig. 1 DSC curves of Ge11.5As24Se64.5 and Ge10As24S66 glasses

图2 (a) 提纯后Ge11.5As24Se64.5 (4.0 mm) 和Ge10As24S66 (5.3 mm) 玻璃的透过光谱, 50×10-6 g/g Al和200×10-6 g/g GaCl3 被分别用作除氧剂和C/H纯化剂, (b) Ge11.5As24Se64.5和Ge10As24S66玻璃的折射率

Fig. 2 (a) Transmission spectra of purified Ge11.5As24Se64.5 (4.0 mm) and Ge10As24S66 (5.3 mm) glasses and (b) Measured refractive indices of Ge11.5As24Se64.5 and Ge10As24S66 glasses 50×10-6 g/g Al and 200×10-6 g/g GaCl3 were used as the oxygen getter and C/H scavenging agents, respectively

图3 Ge-As-Se/Ge-As-S光纤的损耗谱

Fig. 3 Losses of fabricated Ge-As-Se/Ge-As-S core/ cladding fiber

图4 芯径为6 μm 的Ge-As-Se/Ge-As-S光纤的群速度色散曲线

Fig. 4 GVD curve of the Ge-As-Se/Ge-As-S fiber with a core diameter of 6 μm

图5 长度为22 cm 的Ge-As-Se/Ge-As-S光纤中产生的SC。耦合进光纤的抽运激光的重复频率为10.5 MHz、脉冲宽度为320 fs、波长为4.0 μm, 峰值功率为4.6 kW

Fig. 5 Supercontinuum generated in a 22 cm long Ge-As-Se/ Ge-As-S fiber with a core diameter of 6 μm 320 fs pulses at 10.5 MHz repetition rate at 4.0 µm was coupled in the fiber, and the peak power was 4.6 kW

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小芯径硫系玻璃光纤的制备及其非线性光学应用

Fabrication and Application of Small Core Chalcogenide Glass Fibers in Nonlinear Optics

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