Pulsed Laser Operation in a High-pressure Helium Neon Mixture

Boot, H.A.H.; Clunie, D.; Thorn, Richard S.

doi:10.1038/198773b0

Cited by 32 publications

(3 citation statements)

References 2 publications

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“…I n multispatial mode operation, continuous powers of about 100 mw have been achieved. By exciting a 1-15 pm He-Ne maser with 1 psec, 35 kv pulses, peak output powers of 84 w have been reported by Boot, Clunie and Thorn (1963). A maser tube 2 cm in diameter, 150 cm long and filled with 5 mmHg of neon and 240 mmHg of helium was used in these experiments and the maximum average powers obtained were 224 mw.…”

Section: Gaseous Optical Maseysmentioning

confidence: 96%

Microwave and optical masers

Geusic¹,

Scovil²

1964

Rep. Prog. Phys.

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Section: Gaseous Optical Maseysmentioning

confidence: 96%

Microwave and optical masers

Geusic¹,

Scovil²

1964

Rep. Prog. Phys.

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“…Peak output powers of 1 W were obtained for the different gas mixtures at wavelengths of 1.153 and 1.069 µm, respectively. Boot et al [453] went on to demonstrate 84 W peak power performance using a pulsed discharge with a 240 Torr He-Ne gas mixture. In 1964, Crocker et al [454] demonstrated stimulated emission at far-IR wavelengths between 23 and 79 µm using a water vapor discharge.…”

Section: Uk Government Defence Establishmentsmentioning

confidence: 99%

A history of high-power laser research and development in the United Kingdom

Danson

White

Barr

et al. 2021

High Pow Laser Sci Eng

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The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years.

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“…In principle, one could measure sea depth with a pulsed laser rangefinder, but the propagation even of green light is so very bad that only the depth of clear shallow water could be measured-and that is not exactly a demanding case. Magnetic field strength could in principle be measured by the perturbing effect on optical oscillation frequency of, for instance, the Zeeman effect, 3 or alternatively one might use the laser's ability to produce narrow beams or the ease with which interference effects can be obtained to help in instrumental design.…”

Section: Neonmentioning

confidence: 99%

Lasers and their Application to Navigation

King

1964

J. Navigation

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The navigator at the present time relies greatly on both optical devices and on radio systems utilizing electromagnetic waves ranging in wavelength from millimetres up to hundreds of metres. The laser extends the coherent properties of radio waves into the visible part of the spectrum. It is natural therefore to expect that this increased facility should lead to the possibility of devising systems based on the laser which might help to overcome problems that still exist in navigation.It is the purpose of this paper to describe the principles and performance of present-day lasers, to survey some of the techniques used in navigation in order to discover those in which the laser might conceivably play a useful part, and to comment on the laser's advantages and disadvantages in comparison with existing methods. Finally, a particular form of laser called the ‘ring laser’ is described and discussed in some detail. The ring laser is of great interest in that it provides a completely novel way of measuring direction relative to inertial space, and is therefore a possible competitor to the gyroscope for inertial navigation. The ring laser can also measure the velocity of a transparent medium moving relative to it, which could be of use in determining vehicle velocity.

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Pulsed Laser Operation in a High-pressure Helium Neon Mixture

Cited by 32 publications

References 2 publications

Microwave and optical masers

Microwave and optical masers

A history of high-power laser research and development in the United Kingdom

Lasers and their Application to Navigation

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