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Advanced waveguide laser source development using ultrafast laser inscription

使用超快激光刻字开发先进波导激光源

基本信息

批准号：
EP/G030227/1
负责人：
Ajoy Kar
金额：
$ 84.25万
依托单位：
Heriot-Watt University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2009
资助国家：
英国
起止时间：
2009 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG030227%2F1
关键词：
Advanced waveguide laser source development

项目摘要

Most laser systems emit a continuous wave of light, but if the laser is designed correctly it can be induced to emit very short pulses of light using a technique known as mode-locking . There is currently a wide spread requirement for compact, mode-locked laser sources in areas ranging from bio-photonics to metrology. The aim of this proposed project is to develop such sources using two innovative technologies: ultrafast laser inscription and carbon nanotubes as described briefly below. The project will utilise the internationally leading expertise in each of these areas at Heriot Watt University and Cambridge University. If successful, the project will result in a paradigm shift in the current technology. Ultrafast lasers are lasers that emit extremely short pulses of light, routinely less than 100 fs. Due to the short durations of such pulses, the peak powers supplied by modern table top systems can often reach the GW regime. By focusing ultrafast laser pulses inside a transparent material, the structure of the material placed at the focus may be permanently altered. If the material is then translated through the focus, three-dimensional structural modifications can be inscribed in the material. The induced structural modification may manifest itself in a variety of ways, examples of which include an increased etch rate or refractive index change. Through careful control of the inscription parameters, the structural changes can be used to directly inscribe photonic components such as optical waveguides (that guide light in an analogous way to the guiding of electrical current by a metal wire) and micro-channels (that can be used to guide fluids or gases). During this project, we will utilise the unprecedented flexibility offered by ultrafast laser inscription to fabricate a number of previously impossible, or hard to fabricate elements for waveguide laser applications.Carbon nanotubes are cylindrical carbon molecules with diameters of typically only a few nanometers and lengths of up to a few cm, they are at the centre of nanotechnology research. In contrast to conventional bulk materials, the electronic and optical properties of carbon nanotubes can be controlled through their physical size and structure. If correctly fabricated carbon nanotubes are placed inside a laser, mode-locking can be induced without the need for complex electronics. A large part of the project will focus on developing carbon nanotubes with the correct properties for waveguide laser mode-locking applications, and on using ultrafast laser inscription to construct a waveguide laser element that will integrate these carbon nanotubes into the final device.

大多数激光系统发射连续的光波，但如果激光器设计正确，它可以使用一种称为锁模的技术发射非常短的光脉冲。目前，在从生物光子学到计量学的范围内，对紧凑的锁模激光源存在广泛的需求。这个拟议项目的目的是使用两种创新技术开发这种来源：超快激光雕刻和碳纳米管，如下所述。该项目将利用埃里奥特瓦特大学和剑桥大学在这些领域的国际领先专业知识。如果成功，该项目将导致当前技术的范式转变。超快激光器是发射极短光脉冲的激光器，通常小于100 fs。由于这种脉冲的短持续时间，由现代桌面系统提供的峰值功率通常可以达到GW状态。通过将超快激光脉冲聚焦在透明材料内，放置在焦点处的材料的结构可以永久地改变。如果材料然后平移通过焦点，则可以在材料中刻下三维结构修改。所引起的结构修改可以以各种方式表现出来，其示例包括增加的蚀刻速率或折射率变化。通过仔细控制铭刻参数，结构变化可用于直接铭刻光子组件，例如光波导（以类似于通过金属线引导电流的方式引导光）和微通道（可用于引导流体或气体）。在这个项目中，我们将利用超快激光雕刻所提供的前所未有的灵活性来制造一些以前不可能或难以制造的波导激光应用元件。碳纳米管是圆柱形的碳分子，直径通常只有几纳米，长度可达几厘米，它们是纳米技术研究的中心。与传统的块状材料相比，碳纳米管的电子和光学性质可以通过其物理尺寸和结构来控制。如果将正确制造的碳纳米管放置在激光器内，就可以在不需要复杂电子器件的情况下诱导锁模。该项目的很大一部分将集中在开发具有波导激光锁模应用的正确特性的碳纳米管，以及使用超快激光雕刻来构建波导激光元件，将这些碳纳米管集成到最终设备中。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Strain field manipulation in ultrafast laser inscribed BiB3O6 optical waveguides for nonlinear applications.

DOI：
10.1364/ol.36.004548
发表时间：
2011-12
期刊：
Optics letters
影响因子：
3.6
作者：
S. Beecher;Robert R. Thomson;Derryck T. Reid;N. Psaila;Majid Ebrahim-Zadeh;A. Kar
通讯作者：
S. Beecher;Robert R. Thomson;Derryck T. Reid;N. Psaila;Majid Ebrahim-Zadeh;A. Kar

Refractive index and dispersion control of ultrafast laser inscribed waveguides in gallium lanthanum sulphide for near and mid-infrared applications.

DOI：
10.1364/oe.24.006350
发表时间：
2016-03
期刊：
Optics express
影响因子：
3.8
作者：
G. Demetriou;J. Bérubé;R. Vallée;Y. Messaddeq;C. Petersen;D. Jain;O. Bang;C. Craig;D. Hewak;A. Kar
通讯作者：
G. Demetriou;J. Bérubé;R. Vallée;Y. Messaddeq;C. Petersen;D. Jain;O. Bang;C. Craig;D. Hewak;A. Kar

Ultrafast laser inscription of Bragg-grating waveguides using the multiscan technique.

DOI：
10.1364/ol.37.000491
发表时间：
2012-02
期刊：
Optics letters
影响因子：
3.6
作者：
Graeme Brown;R. Thomson;A. Kar;N. Psaila;H. Bookey
通讯作者：
Graeme Brown;R. Thomson;A. Kar;N. Psaila;H. Bookey

Correlating structure with non-linear optical properties in xAs40Se60·(1-x)As40S60 glasses.

DOI：
10.1039/c4cp05599c
发表时间：
2015-02
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
0
作者：
E. Barney;N. Abdel-Moneim;J. J. Towey-J.;J. Titman;J. Mccarthy;H. Bookey;A. Kar;D. Furniss;A. Seddon
通讯作者：
E. Barney;N. Abdel-Moneim;J. J. Towey-J.;J. Titman;J. Mccarthy;H. Bookey;A. Kar;D. Furniss;A. Seddon

Single Stage Ultrafast Laser Inscription of a Side-Polished Fiber-Like Waveguide Sensor