Journal of Optical Technology

Laser strengthening of the edge of glass

V. S. Kondratenko — Sun, 01 Nov 2009 00:00:00 EST

V. S. Kondratenko, P. D. Gindin, O. V. Trubienko, Hsu Muchi, A. Naumov
This paper presents the results of studies in which it shown that various methods of cutting glass affect the mechanical strength of the edge. It is established that cutting glass by the method of laser-controlled thermal cutting increases the strength of the glass by a factor of 5.5 by comparison ... [J. Opt. Technol. 76, 733-736 (2009)]

Interference fringes of equal inclination at large angles of incidence

Yu. N. Zakharov N. V. Chalkova — Sun, 01 Nov 2009 00:00:00 EST

Yu. N. Zakharov, N. V. Chalkova
Interference in thin films, including the formation of fringes of equal inclination, is usually considered for small angles of incidence of light. However, it is necessary in a number of cases to use large angles of incidence of the rays, when it is illicit to replace the sine of an angle by its ... [J. Opt. Technol. 76, 730-732 (2009)]

Low-threshold power limitation of optical radiation in crystals with sensitized anti-Stokes luminescence

M. S. Smirnov — Sun, 01 Nov 2009 00:00:00 EST

M. S. Smirnov, O. V. Ovchinnikov, P. V. Novikov, A. N. Latyshev, M. A. Efimova
This paper shows that it is possible in principle to implement low-threshold power limitation in ionic-covalent crystals with adsorbed metal-cluster-dye-molecule structures that possess sensitized anti-Stokes luminescence. The power-limitation effect for radiation with λ=660nm has been ... [J. Opt. Technol. 76, 725-729 (2009)]

Dynamics of the lasing spectrum of a 3-μm Er:YLF laser with semiconductor pumping

M. V. Inochkin — Sun, 01 Nov 2009 00:00:00 EST

M. V. Inochkin, V. V. Nazarov, D. Yu. Sachkov, L. V. Khloponin, V. Yu. Khramov
This paper discusses a theoretical and experimental study of lasing in an Er:YLF crystal at four wavelengths of the 3-μm transition with selective pumping by the 0.98-μm radiation of laser diodes. Analytical expressions are obtained that describe the variation of the lasing spectrum of ... [J. Opt. Technol. 76, 720-724 (2009)]

Multifunctional laser process system for the high-precision processing of three-dimensional large-scale 3×3×0.6-m items with complex surface shapes

A. G. Verkhoglyad — Sun, 01 Nov 2009 00:00:00 EST

A. G. Verkhoglyad, V. I. Prots', M. F. Stupak, Yu. V. Chuguĭ
The LSP-2000 (Laser System Processor-2000) laser process system for forming a specified surface profile of arbitrary topology on curvilinear surfaces, as well as precision laser processing of large three-dimensional items, has been developed, created, and investigated. This system implements not ... [J. Opt. Technol. 76, 714-719 (2009)]

The accuracy, reliability, and interpretation of the results of in vivo laser fluorescence diagnosis in the spectral range of the fluorescence of endogenous porphyrins

D. A. Rogatkin — Sun, 01 Nov 2009 00:00:00 EST

D. A. Rogatkin, O. A. Bychenkov, L. G. Lapaeva
Based on an analysis of various clinical data, the assumption was recently expressed that the often observed in vivo increased fluorescence of endogenous porphyrins in living biological tissues is a consequence of the status of chronic hypoxia in the tissues. Starting from this, this article ... [J. Opt. Technol. 76, 708-713 (2009)]

How mismatches of the grating segments of an optical compressor affect the width of a compressed pulse

I. V. Golubenko A. A. Andreev — Sun, 01 Nov 2009 00:00:00 EST

I. V. Golubenko, A. A. Andreev
This paper discusses the width increase of a chirped pulse compressed in an optical compressor when there are various types of mismatches of the components of its diffraction gratings, such as the deviation of the gratings from parallelness and relative rotations and shifts of the grating segments ... [J. Opt. Technol. 76, 702-707 (2009)]

Measuring the parameters of vibrations and surface roughness, using the frequency spectrum of the intensity fluctuations of scattered radiation

V. N. Bronnikov M. M. Kalugin — Sun, 01 Nov 2009 00:00:00 EST

V. N. Bronnikov, M. M. Kalugin
This paper uses a diffraction model of radiation scattering on a rough surface to show that it is possible to expand the region of use of the temporal intensity fluctuations of radiation scattered by a vibrating surface (a dynamic speckle pattern). It is established that the characteristics of the ... [J. Opt. Technol. 76, 697-701 (2009)]

Spectral-splitter coatings in laser systems for the visible and infrared regions

E. N. Kotlikov — Sun, 01 Nov 2009 00:00:00 EST

E. N. Kotlikov, E. V. Khonineva, V. N. Prokashev, A. N. Tropin
This paper describes examples of the synthesis and fabrication of optical coatings that operate in the mid-IR region and the visible region simultaneously. In particular, it tells how to separate the radiations of CO_2 and He-Ne lasers by means of interference coatings that transmit (or reflect) ... [J. Opt. Technol. 76, 693-696 (2009)]

Powerful compact Nd:YAG laser

V. V. Nazarov — Sun, 01 Nov 2009 00:00:00 EST

V. V. Nazarov, L. V. Khloponin, V. Yu. Khramov
A compact pulsed Nd:YAG laser with lamp pumping has been developed that generates trains of pulses at wavelengths of 1.064 and 0.532μm. The optical layout of the cavity and the parameters of the gradient output mirror have been optimized to achieve quasi-uniform transverse distribution of the ... [J. Opt. Technol. 76, 689-692 (2009)]

Amplifying properties of two-dimensional photonic-crystal structures that contain active media

O. N. Kozina L. A. Mel'nikov — Sun, 01 Nov 2009 00:00:00 EST

O. N. Kozina, L. A. Mel'nikov
This paper theoretically investigates and numerically models the optical properties of an artificial two-dimensional photonic crystal formed by glass nanofilaments doped with Nd ions and periodically ordered in a dielectric matrix. This investigation is based on two different methods: the method of ... [J. Opt. Technol. 76, 685-688 (2009)]

Optimizing the cavity parameters and choosing the active medium of a solid-state laser that operates in the continuous and pulsed regimes with pumping by a single powerful diode

V. V. Bezotosnyĭ — Sun, 01 Nov 2009 00:00:00 EST

V. V. Bezotosnyĭ, M. V. Gorbunkov, Yu. M. Popov, V. G. Tunkin, E. A. Cheshev, P. V. Kostryukov
This paper discusses how the cavity configuration affects the spatial and temporal structure of the radiation of an efficient compact laser with longitudinal diode pumping, operating in the continuous regime and in the Q-switched regime with an acoustooptic shutter. It is shown that, when the ... [J. Opt. Technol. 76, 680-684 (2009)]

Investigating a thermal lens in a Tm:YLF crystal under intense diode pumping

O. N. Eremeĭkin — Sun, 01 Nov 2009 00:00:00 EST

O. N. Eremeĭkin, N. A. Egorov, N. G. Zakharov, A. P. Savikin, V. V. Sharkov
This paper presents experimental studies of a thermal lens induced in a Tm:YLF crystal under the action of continuous longitudinal pumping by a linear array of diode lasers. A technique is described for measuring the parameters of the thermal lens. It is found that a weak positive lens is formed in ... [J. Opt. Technol. 76, 676-679 (2009)]

Foreword from the editor of this issue

V. A. Serebryakov — Sun, 01 Nov 2009 00:00:00 EST

V. A. Serebryakov
[J. Opt. Technol. 76, 675-675 (2009)]