|
James A. Piper
James A. (Jim) Piper (1 January 1947 – 20 July 2023) was a New Zealand/Australian physicist, Deputy Vice-Chancellor (Research) and Professor of Physics at Macquarie University. Piper studied physics at the University of Otago, New Zealand, and received a B.Sc. (Hons) in 1968. He completed a Ph.D. in atomic physics, also at Otago, in 1971. His post-doctoral research was on metal-vapour lasers, with Colin Webb at Oxford. Laser research in Australia Following his arrival to Macquarie University in the late 1970s, from Oxford, Piper established one of the first laser research centres in Australia. Initially he directed his research toward gas lasers, continuous wave metal ion lasers, cyclic pulsed metal vapour lasers, and metal ion recombination lasers. He also added a laser development program on high-power tunable dye lasers for various applications including atomic vapor laser isotope separation. In this area of research he is co-author, with Frank Duarte, of a number of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunable Laser
A tunable laser is a laser whose wavelength of operation can be altered in a controlled manner. While all laser gain media allow small shifts in output wavelength, only a few types of lasers allow continuous tuning over a significant wavelength range. There are many types and categories of tunable lasers. They exist in the gas, liquid, and solid state. Among the types of tunable lasers are excimer lasers, gas lasers (such as CO2 and He-Ne lasers), dye lasers (liquid and solid state), transition metal solid-state lasers, semiconductor crystal and diode lasers, and free electron lasers. Tunable lasers find applications in spectroscopy, photochemistry, atomic vapor laser isotope separation, and optical communications. Types of tunability Single line tuning Since no real laser is truly monochromatic, all lasers can emit light over some range of frequencies, known as the linewidth of the laser transition. In most lasers, this linewidth is quite narrow (for example, the nm wave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Otago Alumni
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, the designation is reserved for colleges that have a graduate school. The word ''university'' is derived from the Latin ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". The first universities were created in Europe by Catholic Church monks. The University of Bologna (''Università di Bologna''), founded in 1088, is the first university in the sense of: *Being a high degree-awarding institute. *Having independence from the ecclesiastic schools, although conducted by both clergy and non-clergy. *Using the word ''universitas'' (which was coined at its foundation). *Issuing secular and non-secular degrees: grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser Researchers
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light which is ''coherent''. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar (light detection and ranging). Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum. Alternatively, temporal coherence can be used to produce ultrashort pulses of light w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Physicists
Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal Australians, indigenous peoples of Australia as identified and defined within Australian law * Australia (continent) ** Indigenous Australians * Australian English, the dialect of the English language spoken in Australia * Australian Aboriginal languages * ''The Australian'', a newspaper * Australiana, things of Australian origins Other uses * Australian (horse), a racehorse * Australian, British Columbia, an unincorporated community in Canada See also * The Australian (other) * Australia (other) Australia is a country in the Southern Hemisphere. Australia may also refer to: Places * Name of Australia relates the history of the term, as applied to various places. Oceania *Australia (continent), or Sahul, the landmasses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple-prism Grating Laser Oscillators
Multiple-prism grating laser oscillators,F. J. Duarte, Narrow-linewidth pulsed dye laser oscillators, in ''Dye Laser Principles'' (Academic, New York, 1990) Chapter 4. or MPG laser oscillators, use multiple-prism beam expansion to illuminate a diffraction grating mounted either in Littrow configuration or grazing-incidence configuration. Originally, these narrow-linewidth tunable dispersive oscillators were introduced as multiple-prism Littrow (MPL) grating oscillators, or hybrid multiple-prism near-grazing-incidence (HMPGI) grating cavities, in organic dye lasers. However, these designs were quickly adopted for other types of lasers such as gas lasers, diode lasers, and more recently fiber lasers. Excitation Multiple-prism grating laser oscillators can be excited either electrically, as in the case of gas lasers and semiconductor lasers, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple-prism Dispersion Theory
The first description of multiple-prism arrays, and multiple-prism dispersion, was given by Newton in his book ''Opticks''. Prism pair expanders were introduced by Brewster in 1813. A modern mathematical description of the single-prism dispersion was given by Born and Wolf in 1959.M. Born and E. Wolf, ''Principles of Optics'', 7th Ed. (Cambridge University, Cambridge, 1999). The generalized multiple-prism dispersion theory was introduced by Duarte and PiperF. J. Duarte and J. A. Piper, "Dispersion theory of multiple-prism beam expanders for pulsed dye lasers", ''Opt. Commun.'' 43, 303–307 (1982).F. J. Duarte and J. A. Piper, "Generalized prism dispersion theory", ''Am. J. Phys.'' 51, 1132–1134 (1982). in 1982. Generalized multiple-prism dispersion equations The generalized mathematical description of multiple-prism dispersion, as a function of the angle of incidence, prism geometry, prism refractive index, and number of prisms, was introduced as a design tool for multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order Of Australia
The Order of Australia is an honour that recognises Australian citizens and other persons for outstanding achievement and service. It was established on 14 February 1975 by Elizabeth II, Queen of Australia, on the advice of the Australian Government. Before the establishment of the order, Australian citizens received British honours. The Monarch of Australia is sovereign head of the order, while the Governor-General of Australia is the principal companion/dame/knight (as relevant at the time) and chancellor of the order. The governor-general's official secretary, Paul Singer (appointed August 2018), is secretary of the order. Appointments are made by the governor-general on behalf of the Monarch of Australia, based on recommendations made by the Council of the Order of Australia. Recent knighthoods and damehoods were recommended to the governor-general by the Prime Minister of Australia. Levels of membership The order is divided into a general and a military division. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heriot-Watt University
Heriot-Watt University ( gd, Oilthigh Heriot-Watt) is a public research university based in Edinburgh, Scotland. It was established in 1821 as the School of Arts of Edinburgh, the world's first mechanics' institute, and subsequently granted university status by royal charter in 1966. It is the eighth-oldest higher education institute in the UK. The name Heriot-Watt was taken from Scottish inventor James Watt and Scottish philanthropist and goldsmith George Heriot. Known for its focus on science and engineering, it is one of the 23 colleges being granted university status in the 1960s and sometimes considered a plate glass university in the likes of Keele and Newcastle. History School of Arts of Edinburgh Heriot-Watt was established as the School of Arts of Edinburgh (not to be confused with Edinburgh College of Art) by Scottish businessman Leonard Horner on 16 October 1821. Having been inspired by Anderson's College in Glasgow, Horner established the school to provide pract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Trust For The Universities Of Scotland
The Carnegie Trust for the Universities of Scotland is a charitable trust established by Andrew Carnegie in 1901 for the benefit of the universities of Scotland, their students and their staff. The incorporation of the Trust was by royal charter in August 1902, later replaced in July 1978. The endowment of the Trust on establishment was $10 million (an unprecedented gift, amounting to around 200-times the annual governmental funding of the four Scottish universities at the time). In 2004-5, the assets of the Trust amounted to £58million, which enabled awards of £1,667,540 to be made. Under the terms set down by Andrew Carnegie, one half of the Trust's income is reserved for "the improvement and expansion of the Universities of Scotland" with the other half to go towards "the payment of fees of students of Scottish birth or extraction in respect of courses leading to a degree of a Scottish University". The ex–officio Trustees of the Trust are: the Principals of the Univer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OSA Fellow
The Optica Fellow is a membership designation of Optica (formerly known as The Optical Society (OSA)) that denotes distinguished scientific accomplishment. The bylaws of this society only allow 10% of its membership to be designated as an Optica Fellow. The Optica Fellow requires peer group nomination. The nominee An Optica member can only become an Optica Fellow when nominated by a peer group of other current Optica Fellows. Review of the nomination is then passed to the Optica Fellow Members Committee. This committee then nominates the candidate to the Board of Directors on an annual basis. Finally, the purpose of this award is to designate a member as one who has "made significant contributions to the advancement of optics". The process The process includes actively identifying possible candidates who might qualify for this award. Contributing factors for qualification are diverse within the optics community. These factors include significant or distinguishing scientific a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Institute Of Physics
The Australian Institute of Physics was established in 1963, when it replaced the Australian Branch of the British Institute of Physics based in London.''A History of the Physics Department of the University of Queensland'' Emeritus Professor H C Webster, 31 March 1977, Accessed 6 February 2012 The purpose of the institute is to further promote the development and application of the science of physics as well as providing support to physicists.National Library of Australia accessed 5 February 2012 /ref> The AIP publishe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_-_09.JPG "Click for more on -> University Of Otago Alumni")
.jpg "Click for more on -> Multiple-prism Dispersion Theory")
