TiO2/ geo2掺杂二氧化硅光纤的增益曲线和拉曼激光建模

IF 3.9 4区物理与天体物理 0 OPTICS

Ukrainian Journal of Physical Optics Pub Date : 2020-01-01 DOI:10.3116/16091833/21/1/15/2020

G. Felinskyi, V. I. Grygoruk, I. Serdeha

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引用次数: 3

摘要

．我们分析了tio2掺杂单模光纤的拉曼激光带宽作为泵浦功率的函数，根据增益曲线的建模，并将其与典型的标准子拉曼(GeO 2掺杂)光纤进行了比较。两种拉曼增益曲线都是用原始光谱法得到的自发拉曼截面来量化的。对拉曼增益谱获得了极高的多模高斯分解精度。因此，拉曼增益曲线可以用解析形式表示。引入了阈值拉曼谱，并对两种单模光纤中的激光带进行了数值模拟。我们还讨论了掺二氧化钛光纤作为光纤拉曼激光的活性介质的优点，并与其他类型光纤的特性进行了比较。

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Modelling of gain profiles and Raman lasing in TiO2/GeO2-doped silica fibres

. We analyze Raman lasing bandwidth for TiO 2 -doped single-mode fibre as a function of pumping power, following from modelling of the gain profile, and compare it with that typical for an etalon Raman (GeO 2 -doped) fibre. The both Raman gain profiles are quantified using the spontaneous Raman cross-sections derived with an original spectroscopic method. Extremely high accuracy of the multimode Gaussian decomposition is obtained for the Raman gain profiles. As a result, the Raman gain profiles can be presented in analytical form. A threshold spectral Raman profile is introduced and the lasing bands in the both single-mode fibres are simulated numerically. We discuss also the advantages of TiO 2 -doped fibres as the active media for fibre Raman lasing and compare their characteristics with those of the other fibre types.

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来源期刊

Ukrainian Journal of Physical Optics OPTICS-

CiteScore

9.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： “Ukrainian Journal of Physical Optics” contains original and review articles in the fields of crystal optics, piezo-, electro-, magneto- and acoustooptics, optical properties of solids and liquids in the course of phase transitions, nonlinear optics, holography, singular optics, laser physics, spectroscopy, biooptics, physical principles of operation of optoelectronic devices and systems, which need rapid publication. The journal was founded in 2000 by the Institute of Physical Optics of the Ministry of Education and Science of Ukraine.