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  1. No Access

    Article

    Fine and Rough Structures of the Frequency Spectrum of a High-Power Laser Diodes during Slow Degradation

    It is shown that fine and rough structures can be differentiated in the radiation spectrum of a powerful laser diode. The relationship between the spectrum’s characteristics and the internal parameters of the ...

    V. V. Bliznyuk, V. A. Parshin, A. G. Rzhanov… in Bulletin of the Russian Academy of Science… (2024)

  2. No Access

    Article

    Determining the State of the Heterostructure of a High-Power IR Laser Diode Based on the Current Dependence of Its Spectral Characteristics

    A procedure is proposed for determining the quality of the heterostructure of a serial high-power laser diode with a wide contact. The procedure is based on the current dependence of the number of radiation ch...

    V. V. Bliznyuk, V. A. Parshin, A. G. Rzhanov… in Bulletin of the Russian Academy of Science… (2022)

  3. No Access

    Article

    Determining the Service Life of a High-Power IR Laser Diode Using a Model of an Autonomous Channel of Generation

    A way of calculating the service life of serial high-power laser diodes with wide contacts is proposed. The procedure is based a 50-h field study of a sample from a large batch of such devices and the spectrum...

    V. V. Bliznyuk, V. A. Parshin, A. G. Rzhanov… in Bulletin of the Russian Academy of Science… (2022)

  4. No Access

    Article

    Determining the Rate of Degradation of a High-Power Laser Diode from the Dependence of the Radiation Spectrum on Variations in the Pum** Current

    A way is proposed for measuring the rate of degradation of a high-power continuous-wave laser diode with a wide contact by monitoring the state of its heterostructure every 50 h of operation. The number and st...

    V. V. Bliznyuk, V. A. Parshin, A. G. Rzhanov… in Bulletin of the Russian Academy of Science… (2021)

  5. No Access

    Article

    Predicting the Service Life of High-Power Laser Diodes, Based on Their Radiation Spectrum at the Initial Stage of Operation

    A way of predicting the service life of high-power wide-contact laser diodes is proposed, based on spectral measurements at the initial stage of operation of these devices. The forming of spectra and channels ...

    V. V. Bliznyuk, O. I. Koval, V. A. Parshin… in Bulletin of the Russian Academy of Science… (2020)

  6. No Access

    Article

    Analyzing the Spectral Characteristics of Laser Diodes to Optimize Their Pum**

    The interaction between the spectral characteristics of laser diodes is considered along with the possibility of establishing the optimum pump current for their maximum service life. The relationship between a...

    V. V. Bliznyuk, K. P. Galstyan… in Bulletin of the Russian Academy of Science… (2020)

  7. No Access

    Article

    Estimating the Operational Lifespan of Transverse Single-Mode Laser Diodes from Their Spectral Characteristics

    A way of predicting the operational lifespan of transverse single-mode laser diodes, based on analyzing the form factor of the envelope of its emission spectrum at the initial stage of operation, is proposed.

    V. V. Bliznyuk, O. I. Koval, V. A. Parshin… in Bulletin of the Russian Academy of Science… (2018)

  8. No Access

    Article

    Determining the refractive index of a laser diode waveguide from the measured radiation pattern

    It is shown that to find the transverse refractive-index profile of a semiconductor laser waveguide, it is sufficient to know the angle of the device’s radiation divergence and two values of the function descr...

    V. V. Bliznyuk, O. I. Koval, V. A. Parshin… in Bulletin of the Russian Academy of Science… (2018)

  9. No Access

    Article

    Analysis of the radiation pattern of laser diode radiation based on experimental data

    It is shown that the radiation pattern of laser diode radiation can quantitatively be analyzed without labor-intensive and expensive measurements of the radiation intensity distribution in the near-field zone....

    V. V. Bliznyuk, N. V. Berezovskaya, M. A. Brit, O. I. Koval… in Physics of Wave Phenomena (2017)

  10. No Access

    Article

    Experimental study of the characteristics of high-power laser diode radiation in the above-threshold mode for degradation analysis

    The angular dependence of the intensity and contrast of the radiation of laser diodes (LDs) with a CW power of 1.25 W has been investigated in the above-threshold mode. An original method for detecting fundame...

    V. V. Bliznyuk, N. V. Berezovskaya, M. A. Brit, O. I. Koval… in Physics of Wave Phenomena (2017)

  11. No Access

    Article

    Spectral, space–energy, and polarization characteristics of laser diodes with lasing wavelengths of 530 nm

    The characteristics of laser diodes (LDs) with quantum-well (QW) InGaN layers with lasing wavelengths of 530 nm are studied experimentally. It is shown that the LD radiation contrast at the initial phase of op...

    V. V. Bliznyuk, N. V. Berezovskaya… in Bulletin of the Russian Academy of Science… (2015)

  12. No Access

    Article

    Degradation and spectral–spatial characteristics of the radiation of high-power laser diodes

    Characteristics of the radiation of high-power injection lasers with quantum wells (QW) at 965 nm are measured before and after 30 and 100 h of operation. The relation between slow laser degradation and their ...

    V. V. Bliznyuk, M. A. Brit, I. S. Gadaev… in Bulletin of the Russian Academy of Science… (2015)

  13. No Access

    Article

    Determination of the Mode Composition of the Radiation of a Laser Diode in Open Space

    A plant and a technique of determining the mode composition of the radiation of laser diodes with quantum-size separate restriction heterostructures are described. Based on the features of laser beams with lar...

    V. V. Bliznyuk, M. A. Brit, V. S. Efremov, O. O. Kostina… in Measurement Techniques (2014)

  14. No Access

    Article

    A nonselective thermal primary measurement converter of laser radiation with a plane specularly reflecting energy collector

    The results of mathematical modeling of the spectral characteristic of a modification of the IMO-4 wattmeter are presented. It is shown that a wattmeter that is practically nonselective in the 3–12 μm spectral...

    V. V. Bliznyuk, A. A. Tinaev in Measurement Techniques (2010)