Features of laser diodes' radiation in different temperature intervals

Journal Title: Вестник МГТУ - Year 2017, Vol 20, Issue 4

Abstract

In the literature there is practically no information on the change in the characteristics of the emission spectrum of industrial semiconductor laser diodes in a wide range of temperatures, including cryogenic temperatures. Nevertheless, this information is decisive when choosing specific laser diodes for industrial devices. An experimental study of features of the emission spectra of laser semiconductor diodes in the temperature range 50–300 K has been conducted. The material used in the laser diodes' manufacture is a compound based on the solid quaternary AlGaInP solution. The radiation spectrum has been investigated using a monochromator MDR-23 with a CCD detector installed. The study has proved that the temperature of the laser diode operation determines the nature of the radiation spectrum, in particular the predominance of stimulated or induced radiation has taken place, the range of wavelengths of radiation changes as well. It is believed that in the temperature range from 50 to 300 K in the volume of the laser diode material some processes are realized, as a result of which the value of the forbidden band width changes, it decreases by approximately 4.2–4.5 % from the value corresponding to the temperature of 50 K. The calculation of the value of the temperature coefficient of the change in the forbidden band width has shown that in the temperature range from 50 to 300 K the meaning of β varies in absolute value by 2–3 times. A new experimental method for determining ionization energies of exciton levels has been proposed. It is of practical use for monitoring the electro-physical parameters of semiconductor materials used in the manufacture of industrial semiconductor lasers. The advantage of the proposed method is the ability to obtain qualitative and quantitative information about the exciton spectrum of the laser diode material directly in the region of the p–n-junction where the laser radiation is formed.

Authors and Affiliations

S. V. Vlasova, A. B. Vlasov, P. Yu. Shapochkin

Keywords

Related Articles

Comprehensive monitoring of the bacterial plankton fish farm of the Tuloma River and the intestinal enteric microbiota cultivated in trout cages

This paper deals with the field of protection and management of aquaculture growing technologies. The comprehensive monitoring of the microbiological parameters of the aquatic environment of the Tuloma River and the obse...

Structure of settlements of Macoma balthica in the southern knee of the Kola Bay

The study of seasonal dynamics of size-mass structure of Macoma balthica settlements has been investigated on the littoral zone of the southern part of the Kola Bay. Age structure has been calculated; data on the density...

Estimate of the trophic status ofsubarctic Imandra Lake

The object of study isImandra Lake – the largest reservoir of the Murmansk region. The lake is being influenced by the long-term and multi-factorial activities of mining and ore processing industries, air pollution and e...

Ecological and biochemical monitoring of some intertidal mussel Mytilus edulis L. settlements in Kandalaksha Nature Reserve

Mussels Mytilus edulis L. living on the littoral are traditional objects for monitoring the state of coastal ecosystems. In the process of ecological and biochemical studies of some littoral settlements of these mussels...

A pulse generator with inductive energy storage for measuring the grounding resistance of transmission line towers

The pulse method may be used to measure the footing resistance of transmission towers with overhead grounding wires. Measuring systems that obtain the time dependent transient impedance may be used to measure the low-fre...

Download PDF file
  • EP ID EP255651
  • DOI 10.21443/1560-9278-2017-20-4-697-704
  • Views 169
  • Downloads 0

How To Cite

S. V. Vlasova, A. B. Vlasov, P. Yu. Shapochkin (2017). Features of laser diodes' radiation in different temperature intervals. Вестник МГТУ, 20(4), 697-704. https://europub.co.uk/articles/-A-255651