1,721,098 research outputs found
Dataset for analytical thermal model for end-pumped solid-state lasers
No full textData supporting the paper:
Cini, Luigi; Mackenzie, Jacob / Analytical thermal model for end-pumped solid-state lasers. In: Applied Physics B: Lasers and Optics</span
A 11.5 W Yb:YAG planar waveguide fabricated via pulsed laser deposition
No full textDataset for the figures in Grant-Jacob, James A, Beecher, Stephen J, Parsonage, Tina L, Hua, Ping, Mackenzie, Jacob I, Shepherd, David P and Eason, Robert W (2015) An 11.5 W Yb:YAG planar waveguide laser fabricated via pulsed laser deposition. Optical Materials Express
Data collection method: Optical spectrum analyzer (Ando AQ6317).</span
Dataset for the paper: Temperature-dependent spectroscopy and microchip laser operation of Nd:KGd(WO4)2
No full textUnderpinning data for selected figures in the paper Temperature-dependent spectroscopy and microchip
laser operation of Nd:KGd(WO4)2, by Pavel et al., Optical Materials, DOI: 10.1016/j.optmat.2016.06.005.</span
In transition: a new journey
No full textDear readers of Applied Physics B, after a little over 8 years, I am leaving the office of Editor-in-Chief. It has been a true professional as well as personal pleasure to work with the editorial board and our publisher to maintain this journal as a high-quality scientific repository by ensuring that decision-making was always based on scientific reasoning only—novelty and physical insight which is the ultimate interest of scientific authors. The stream of submissions has continued to evolve from its foundational topics on the laser itself and all variants of spectroscopy into an ever more widening range of applications enabled by photonic light sources and devices, rendering insight into many unexpected areas of physics for the Editor-in-Chief. Since lasers and photons are on their way to feed the leading technologies for the twenty-first century, this development will not stop. My best wishes are with Applied Physics B, Jacob Mackenzie, and its readers to take advantage of this excellent opportunity and further accompany scientific advances in the fields of Lasers and Optics!As the incoming editor-in-chief, I see a daunting challenge ahead, though in part calmed by the excellent platform that has been built by my predecessors. Looking at the journey ahead reminds me of a time just over 2 decades ago when I wanted to research a change of direction in my career. Working then as an electro-optic engineer a few years out of university, I felt the need to return to academic pursuits and undertake a doctorate. At that time the only way I knew to explore the world of scientific literature was printed Abstracts archives in the library. Volumes and volumes lined the shelves, each covering a year of scientific publications for specific ranges of topics, requiring days of research just to uncover likely papers relevant to my field of interest, solid-state lasers. That was just the start of the process! Today, in seconds you can achieve what took days or weeks, just 25 years ago. The publishing landscape has been transformed dramatically and incredibly rapidly, along with so many other aspects of our daily lives, underpinned by lasers and optics that are driving the world wide web and are the core focus of this archival journal.This year marks the 40th anniversary since the demarcation of the Springer-Verlag journal of Applied Physics into separate branches, Applied Physics A: Solids and Surfaces and Applied Physics B: Photophysics and Laser Chemistry, the latter changing the emphasis to Lasers and Optics in 1994. Founded and edited by H.K.V. Lotsch until 1995, the Editorship was then taken over by F. Träger until 2012 when the helm was passed to D. Meschede, all ably supported by T.W. Hänsch, who was a co-editor for 33 years (1983–2016) and who remains an Honorary Editor to this day. The journal’s ethos was, and still is, to be a leading international periodical capturing key experimental and theoretical breakthroughs in the science of photons. Notable exemplars include the first papers on the now indispensable laser phase and frequency stabilisation technique [1], the disc laser [2], carrier-envelope phase control in ultra-short pulses [3], and ground-state-depletion fluorescence microscopy [4], with further seminal papers ranging from femtosecond-laser nano-surgery [5], through Terahertz imaging [6], to laser wakefield acceleration [7].Stringent peer review through editorial and scientists’ critique is fundamental in maintaining the quality and relevance of a journal and its content. We are proud to follow the guiding principle that this journal is steered by scientists for scientists, aiming to promulgate critical knowledge and insight within the field of lasers and optics. Our editorial board has a broad depth of expertise covering wide-ranging topics within the field and who will continue to strive for excellence in the selection of submissions for publishing
60-W cryogenically-cooled Nd:YAG 946 nm laser
No full textCryogenic-cooling has proved to be an efficient way of power-scaling solid-state lasers, thanks to the enhancement of spectroscopic and thermo-optical properties of the gain media. We have investigated the absorption cross section of Nd:YAG at cryogenic temperatures via a small-signal measurement method, enabling the determination of the analogous dependence of the Energy Transfer Upconversion (ETU) macroparameter, via a z-scan technique. These results were key to establishing that, while at Room Temperature (RT) the 946 nm quasi-four-level transition of Nd:YAG is essentially limited by low gain and detrimental thermal effects exacerbated by ETU, for cryogenic cooling of the gain crystal, an overall improvement in laser performance, despite an increase in the ETU coefficient, is obtained. In-band-pumped by a diode-laser, locked to 869 nm viaa volume-Bragg-grating, we demonstrate a 60-W 946 nm laser with a 50% conversion efficiency
Spectroscopic characterisation of Yb:LiLuF<sub>4 </sub>between (63-293)K
No full textAbsorption and emission cross-section spectra for Yb:LuLiF4 are reported for sub-ambient temperatures. Significant deviation from reciprocity between them highlights the importance of electron-phonon coupling in this material and benefits thereof for diode-laser pumping
Circular beams from slab lasers
No full textA novel resonator concept that produces a circular output beam and highly-elliptical cavity mode suitable for slab lasers is presented, including preliminary results for a diode-bar-pumped Nd:YLF slab laser. Prospects for power scaling are considered
Energy transfer upconversion in Nd:YAG at cryogenic-temperatures
No full textThe precise characterisation of the ground state absorption cross section around 800nm of Nd:YAG from Room Temperature to Liquid Nitrogen Temperature is presented. These results enabled the measurement of the Energy Transfer Upconversion macroparameter over the same temperature range for 0.3at.% - and 0.6at.%-doped samples via a simple and automated z-scan technique. The main absorption cross section peak at 808nm is found to increase from (6.90±0.30)pm2 at the highest to (42.30±2.10) pm2 at the lowest temperatures, respectively. Over the same range, the ETU parameter increases from (21.5±2.3)10−18cm3/s to (52.6±2.5)10−18cm3/s and from (36.0±2.8)10−18cm3 to (65.7±1.9)10−18cm/s, for 0.3at.% and 0.6at.%, respectively. Although a limiting factor in the RT operation at 946nm of Nd:YAG, we calculate that despite the twofold increase in the ETU parameter, with the crystal cooled to LNT its effect on laser threshold is negligible
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