Survey of Damage Thresholds at 532 NM for Production-RUN optical Components

The simulation of aerosol Lidar developed at the Institute of Geophysics

Tạp chí Khoa học và Công nghệ Biển ◽

10.15625/1859-3097/17/4b/12991 ◽

2017 ◽

Vol 17 (4B) ◽

pp. 51-57

Author(s):

A. D. Tuan ◽

N. X. Anh ◽

T. P. Hung

Keyword(s):

Boundary Layer ◽

Physical Properties ◽

Near Infrared ◽

Optical Glass ◽

Lidar System ◽

Optical Components ◽

Infrared Wavelength ◽

Sensing System ◽

Highly Sensitive ◽

532 Nm

Lidar is an active remote-sensing system that uses laser radiation in the ultraviolet, visible and near-infrared wavelength domain. It allows the measurement of the physical properties of the atmosphere with spatial and temporal resolution. We have simulated the system and researched the initial design of the Lidar system to monitor the aerosol with the main parameters: high power Nd - YAG pulse laser emitted at the 532 nm wavelength. The system includes 28 cm diameter optical glass, photomultiplier tube (PMT) - H6780-03 photodetector, and optical components for convergence and filtering of reflected reflections. Initial measurements show that the Lidar system is highly sensitive, which determines important atmospheric properties such as the distribution and physical properties of the aerosol and height of ABL (atmospheric boundary layer).

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High Performance Beam Steering via Tunable Liquid Prisms

Volume 1: Micro/Nanofluidics and Lab-on-a-Chip; Nanofluids; Micro/Nanoscale Interfacial Transport Phenomena; Micro/Nanoscale Boiling and Condensation Heat Transfer; Micro/Nanoscale Thermal Radiation; Micro/Nanoscale Energy Devices and Systems ◽

10.1115/mnhmt2016-6580 ◽

2016 ◽

Author(s):

Carlos Enrico Clement ◽

Sung-Yong Park

Keyword(s):

High Performance ◽

Beam Steering ◽

Fluid Interfaces ◽

Optical Components ◽

Wide Beam ◽

Liquid Lenses ◽

Refractive Index Difference ◽

Control Fluid ◽

532 Nm ◽

Incoming Light

The use of liquids for the manipulation of light has many advantages over their conventional solid counterparts. With the emergence of microfluidic technologies to control fluid interfaces, various devices capable of replacing conventional optical components have been developed. Because liquids are intrinsically smooth and can change shape or form, they have been utilized for highly versatile components to manipulate light with high degrees of control using optofluidic technologies. Liquid lenses and beam steering devices are among the typical optofluidic devices that have gained much interest over recent years. In this work, we present high-performance tunable liquid prisms capable of wide beam steering of incoming light. By using the electrowetting phenomena, we are able to modulate the fluid-fluid interface at which beam steering occurs. Optical analyses were conducted to study the effect of liquid selection in the effectiveness of our prisms. Furthermore, the double-stacked prism configuration is proposed to achieve wide beam steering and its performance is compared with that of a single prism for different liquid selections. Finally, our analytical studies have been experimentally demonstrated. We successfully fabricated the tunable liquid prism filled with water and 1-bromonaphthalene (1-BN). Due to large refractive index difference between two liquids (nwater = 1.33 and n1−BN = 1.65 at λ = 532 nm), high-performance beam steering was enabled. With an apex angle of 25°, we were able to experimentally demonstrate a beam steering of β ≤ 8.82° with the single prism configuration. It was significantly improved up to β ≤ 17.04° for the double-stacked prism.

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Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052754 ◽

1974 ◽

Vol 32 ◽

pp. 548-549

Author(s):

T. J. Magee ◽

J. Peng ◽

J. Bean

Keyword(s):

Electron Microscope ◽

Sulfuric Acid ◽

Solid State ◽

Sample Preparation ◽

Cadmium Telluride ◽

Potassium Dichromate ◽

Optical Components ◽

The Past ◽

Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

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Prospects of development of the reference base of the Russian Federation in the field of length measurements

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-2-3-5 ◽

2020 ◽

pp. 3-5

Author(s):

Y. G. Zakharenko ◽

N. A. Kononova ◽

V. L. Fedorin ◽

Z. V. Fomkina ◽

K. V. Chekirda

Keyword(s):

High Precision ◽

Russian Federation ◽

Reference Base ◽

Length Measurements ◽

Laser Sources ◽

The Russian Federation ◽

Unit Of Length ◽

Further Development ◽

532 Nm

The results of the work to create a complex of high-precision hardware for the unit of length reproduction and transferring carried out at “D. I. Mendeleyev Institute for Metrology (VNIIM)” are represented. This complex will serve as the basis for the further development of the reference base of the Russian Federation in the field of length measurements and will allow reproduction of the unit of length at two wavelengths of 633 nm and 532 nm, as well as measurements of the wavelength of laser sources in vacuum in the range from 500 to 1050 nm.

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Linear and Nonlinear Optical Properties of Natural Dyes Freestanding Films and Application in Optical Limiting

10.32792/utq/utjsci/vol7/2/30 ◽

2020 ◽

pp. 139-143

Keyword(s):

Absorption Coefficient ◽

Water Solution ◽

Optical Limiting ◽

Refraction Index ◽

Laser Wavelength ◽

Solid State Laser ◽

Natural Dyes ◽

Linear And Nonlinear ◽

532 Nm ◽

Absorbance Spectra

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.

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Self-Assembly Optical Components

MRS Proceedings ◽

10.1557/proc-771-10.10 ◽

2003 ◽

Vol 771 ◽

Cited By ~ 2

Author(s):

Pavel I. Lazarev ◽

Michael V. Paukshto ◽

Elena N. Sidorenko

Keyword(s):

Optical Properties ◽

Self Assembly ◽

Crystalline State ◽

Liquid Crystalline ◽

Film Deposition ◽

X Ray Diffraction ◽

Optical Components ◽

Crystal Film ◽

Solid Film ◽

Thin Crystal

AbstractWe report a new method of Thin Crystal Film deposition. In the present paper we describe the method of crystallization, structure, and optical properties of Bisbenzimidazo[2,1-a:1',2',b']anthra[2,1,9-def:6,5,10-d'e'f']-diisoquinoline-6,9-dion (mixture with cis-isomer) (abbreviated DBI PTCA) sulfonation product. The Thin Crystal Film has a thickness of 200-1000 nm, with anisotropic optical properties such as refraction and absorption indices. X-ray diffraction data evidences a lyotropic liquid crystalline state in liquid phase and crystalline state in solid film. Anisotropic optical properties of the film make it useful in optical devices, e.g. liquid crystal displays.

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