Модули фотоэлектрических преобразователей лазерного (&lambda; = 809-850 nm) излучения

A high-efficiency photovoltaic module optimized for converting the monochromatic radiation with a wavelength of 809-850 nm is presented. The module comprises four photovoltaic converters with the total area of 16 cm2, which can provide the operating voltage of 4 V in the case of laser power greater than 1 W. The laser power converters are developed on the basis of AlGaAs/GaAs structures grown by LPE and MOVPE. When operating in the uniform illumination mode, the efficiency of the photovoltaic module is found to exceed 60% for the powerful laser radiation (6.2 W).

Download Full-text

Genetic algorithm designed high efficiency laser power converters based on the vertical epitaxial heterostructure architecture

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2019.03.050 ◽

2019 ◽

Vol 200 ◽

pp. 109878 ◽

Cited By ~ 1

Author(s):

Slobodan Čičić ◽

Stanko Tomić

Keyword(s):

Genetic Algorithm ◽

Laser Power ◽

High Efficiency ◽

Power Converters

Download Full-text

Intrinsic losses in photovoltaic laser power converters

Applied Physics Letters ◽

10.1063/5.0040144 ◽

2021 ◽

Vol 118 (10) ◽

pp. 104103

Author(s):

Minshen Lin ◽

Wei E. I. Sha ◽

Wenxing Zhong ◽

Dehong Xu

Keyword(s):

Laser Power ◽

Power Converters

Download Full-text

InGaAs metamorphic laser power converters with distributed Bragg reflector for wavelength range λ=1 – 1.1 µm

10.1063/5.0032903 ◽

2020 ◽

Author(s):

Nikolay A. Kalyuzhnyy ◽

Viktor M. Emelyanov ◽

Sergey A. Mintairov ◽

Mariia V. Nahimovich ◽

Roman A. Salii ◽

...

Keyword(s):

Wavelength Range ◽

Laser Power ◽

Power Converters ◽

Bragg Reflector ◽

Distributed Bragg Reflector

Download Full-text

Temperature Calibration Measurements based on Laser-Induced Phosphorescence Technique for Combustion Applications

International Journal of Thermal and Environmental Engineering ◽

10.5383/ijtee.10.01.006 ◽

2015 ◽

Vol 10 (1) ◽

Keyword(s):

Laser Radiation ◽

Laser Beam ◽

Intensity Ratio ◽

Laser Power ◽

Room Temperature ◽

Pulsed Laser ◽

Temperature Calibration ◽

Phosphor Powder ◽

Calibration Methods

Phosphor powder and phosphor-binder mixtures are successfully employed for temperature calibration measurements by using laser-induced phosphorescence (LIP) technique with an emphasis on higher precisions and accuracies than other non-intrusive methods. The phosphorescence intensities are used to perform these calibrations in three different strategies. The influence of laser power regular changes on particles heating and the calibration analyses is also carried out. A pulsed laser at 355 nm was used for exciting specimens of the phosphor powder as well as the phosphor-binder mixtures. The laser beam was directed onto the specimens and varied in three laser power levels (LPLs). The samples were kept in an oven with temperatures ranging from room temperature up to 1800 °C. The three strategies which are expressed in terms of non-dimensional intensity versus wavelength (NDI-W), normalised intensity (NI) and intensity ratio (IR) were used for the calibration assessments. A modified IR was compared with two different IRs. A precision of around ± (0.50-1.41)% was attained for different calibration methods. This research confirmed that these calibrations are possible using three different strategies, given high precisions and accuracies. The laser power alternations influenced the NI and do affect neither the NDI-W nor the IR curves. The laser radiation does not play any role for heating the particles of the studied powder.

Download Full-text

Laser therapy in patients operated for orthognathic pathology

Fizioterapevt (Physiotherapist) ◽

10.33920/med-14-2104-04 ◽

2021 ◽

pp. 32-37

Author(s):

Natalya Gennadievna Kulikova ◽

Z.G. Zhilokov ◽

A.S. Tkachenko

Keyword(s):

Laser Radiation ◽

Laser Therapy ◽

Postoperative Period ◽

High Efficiency ◽

Pulse Mode ◽

Early Postoperative Period ◽

Pulse Radiation ◽

Dental Patients ◽

Low Intensity ◽

Intensity Parameters

The study is carried out with an emphasis on modern aspects of the diagnosis and treatment of patients with orthognathic disorders in the dynamics of laser therapy of different wavelengths, frequency and intensity parameters, dosed in pulse mode. It has been noted that the consistent use of laser low-intensity pulse radiation (ƛ=635nm) and laser low-intensity pulse radiation (l’904nm) increases the effectiveness of rehabilitation of dental patients in the early postoperative period, which is confirmed by the regression of initial shifts of microhemoregulatory indicators. The article demonstrates the feasibility and high efficiency of the application of complex physiotherapy, including laser radiation after orthognathic operations.

Download Full-text