Possibility of using structures with open pores in construction of cooled laser mirrors

2018

OAJMTP

The advent of the laser has placed stringent requirements on the fabrication, performance and quality of optical elements employed within systems for most practical applications. Their high power performance is generally governed by three distinct steps, firstly the absorption of incident optical radiation (governed primarily by various absorption mechanisms); secondly, followed by a temperature increase and response governed primarily by thermal properties and finally the elements thermo-optical and thermomechanical response, e.g., distortion, stress birefringenous fracture, etc. All of which needs to be understood in the design of efficient, compact, reliable and useful for many applications high power systems, under a variety of operating conditions, pulsed, continuous wave, rep-rated or burst mode of varying duty cycles which is the most important for the wide spectrum of applications.

Section: Repetitively Pulsed Regimementioning

confidence: 99%

High power optics

2018

OAJMTP

“…As a result, they served as prototypes for different laser beam modulation, selection and scanning devices. For example, the use of an adaptive POE in the laser cavity made it possible to convert high-power CW radiation into high-frequency repetitively pulsed radiation by Q-switching [87][88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105], and the employment of adaptive POEs in a Fabry-Perot interferometer allowed for automated analysis of spectral and modal composition of laser radiation, etc. Undoubted are the advantages of this class of adaptive POEs in traditional applications of adaptive systems, such as laser ranging.…”

Section: Chapter 4 Adaptive Poes and Optical Systems Based On Themmentioning

confidence: 99%

“…The actuators are also made of an absolutely rigid (in comparison with the porous structure) material capable of producing the specified movements or stresses. The free surface of the porous structure has a separation layer with a deposited reflective coating [92][93][94][95][96][97][98][99][100]108,[109][110][111][112][113][114][115][116].…”

Section: Poes Based On Porous Structuresmentioning

confidence: 99%

High-Power Optics

Springer Series in Optical Sciences

2015

The Springer Series in Optical Sciences, under the leadership of Editor-in-Chief William T. Rhodes, Georgia Institute of Technology, USA, provides an expanding selection of research monographs in all major areas of optics: lasers and quantum optics, ultrafast phenomena, optical spectroscopy techniques, optoelectronics, quantum information, information optics, applied laser technology, industrial applications, and other topics of contemporary interest. With this broad coverage of topics, the series is of use to all research scientists and engineers who need up-to-date reference books.

“…They were cut as close to the surface as possible, but this lead to vibration and deformation of the mirror surface due to pressure fluctuations of water. Then, there was an attempt to make the channels shallower and manufacture micro-capillary structures [15][16][17][18][19][20][21][22][23][24][25][26][27]. This approach led to the conclusion that it is better to use specially designed metal capillary-porous structures, similar to a sponge for washing dishes.…”

Section: Cooling Of Mirrorsmentioning

confidence: 99%

“…Now there are several methods of applying thin layers on a highly porous material, but initially it was quite a challenging task. The problem was solved by using intermetallic compounds [17][18][19], i.e., chemical compounds of metals with each other. Intermetallic coatings are obtained, for example, by deposition from the gas phase.…”

Section: Mirror Surfacementioning

confidence: 99%

High power optics and its new manifestations

2013

The advent of the laser has placed stringent requirements on the fabrication, performance and quality of optical elements employed within systems for most practical applications. Their high power performance is generally governed by three distinct steps, firstly the absorption of incident optical radiation (governed primarily by various absorption mechanisms); secondly, followed by a temperature increase and response governed primarily by thermal properties and finally the elements thermo-optical and thermomechanical response, e.g., distortion, stress birefringenous fracture, etc. All of which needs to be understood in the design as efficient, compact, reliable and useful for many applications high power systems, under a variety of operating conditions, pulsed and continuous wave, rep-rated or burst mode of varying duty cycles