Advances in Lasers and Applications最新文献

Materials for lasers and nonlinear optics 激光和非线性光学材料

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-6

W. Krupke

引用次数: 0

A review of diode-pumped lasers 二极管泵浦激光器的研究进展

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-1

D. Hanna, W. Clarkson

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Fibre and waveguide lasers 光纤和波导激光器

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-3

A. Tropper

{"title":"Fibre and waveguide lasers","authors":"A. Tropper","doi":"10.1201/9781003209652-3","DOIUrl":"https://doi.org/10.1201/9781003209652-3","url":null,"abstract":"The guided-wave laser is almost as old as the laser itself. The first demonstration of laser action in glass made use of a multimode waveguide; a core rod encased in a cladding of lower refractive index so that confinement of the light would counteract the effect of the poor optical quality of the available glass, (Snitzer, 1961). However, although waveguiding has long been an essential feature of semiconductor diode lasers, in dielectric laser media by far the greatest research effort has gone into the development of bulk rods and slabs of high optical quality. Interest in the potential advantages of guided wave dielectric gain media was only quickened with the advent of high quality single mode optical waveguides, especially rare earth doped silica fibres, in which the propagation losses are so low that the benefits of optical confinement are fully realised. The most immediate advantage of the guided-wave geometry is that of reducing the cavity mode volume, and hence the pump power needed to reach threshold. Provided the guiding structure is designed so as to support only a single propagating mode at the gain wavelength, then the laser output will be spatially coherent, in a mode that is not affected, for example, by cavity misalignment. The guided-wave laser can be designed as a compact, stable, monolithic device, exploiting all the techniques of integrated optics, such as gratings, couplers, and modulators. Since the active region of a guided-wave laser is typically only a few µm in diameter, fabrication can involve a range of deposition techniques very different from those used to grow bulk media. The resulting gain medium may have a composition or dopant concentration not available to a bulk phase. On the other hand the advantages of a guided-wave structure are cancelled if propagation losses compete too effectively with the achievable gain. A further difficulty attending these optically pumped devices is the need to couple pump light into the waveguide core. The pump sources themselves must therefore emit spatially coherent beams, and expensive micropositioning techniques are required. The literature on fibre and planar dielectric waveguide lasers is now so extensive that a review of this type cannot attempt to be comprehensive. My aim is rather to sketch the principles of guided-wave laser design and operation, and introduce a few selected devices of particular current interest. I shall pay particular attention to the role that guided-wave systems may play in the effort to develop compact and efficient sources emitting high power diffraction-limited beams. Diode-bar lasers emitting many tens of watts are now readily available, but it remains a challenge to convert the highly asymmetric and multimode output from such a device into a usable beam in a simple and efficient way. It is not at first sight obvious that a guided wave laser should be particularly suitable for high power operation. Waveguides are characteristically devices in which ","PeriodicalId":431782,"journal":{"name":"Advances in Lasers and Applications","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115718967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid state lasers and nonlinear optics for LIDAR 激光雷达用固态激光器和非线性光学

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-9

P. Moulton

引用次数: 0

Medical lasers: fundamentals and applications 医疗激光器:基本原理和应用

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-8

R. Verdaasdonk

引用次数: 0

Ultrashort pulse generation 超短脉冲产生

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-5

U. Keller

引用次数: 0

Visible cw solid-state lasers 可见连续波固体激光器

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-2

G. Huber

引用次数: 0

Periodically poled materials for nonlinear optics 非线性光学的周期性极化材料

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-7

L. Myers

引用次数: 0

Lasers in material processing 材料加工中的激光

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-12

P. Loosen

引用次数: 0

Challenges for new laser sources in the defence industry 新型激光源在国防工业中的挑战

Advances in Lasers and Applications Pub Date : 2021-09-23 DOI: 10.1201/9781003209652-10

J. Barr

引用次数: 0