Add to favorite
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS

Oleg Losev Pioneer of Optoelectronics
June 6, 2007 19:16

Oleg Vladimirovich Losev, Russian physicist

The majority of encyclopedic sources state the year, when conventional light-emitting diodes first appeared, to be 1962, soon after diode laser has been invented. However, light-emitting diodes have appeared much earlier, as a result of the research of Soviet inventor, physicist Oleg Vladimirovich Losev.

Last issue of Nature Photonics scientific magazine contains an interesting article, dedicated to 100 anniversary of optoelectronics. First time, when phenomenon of fluorescence under current passage through semiconducting materials was detected, was in the beginning of the XX century – Henry Round, assistant of Guglielmo Marconi, noticed the phenomenon and described it in a very short article (it was shorter than one page) on this issue in the Electrical World magazine in 1907, however, no more research results or articles on this topic have been published. Oleg Losev, who apparently has never come across Round's note, published a number of articles on studying semiconducting materials in several Soviet, English and German scientific magazines in the twenties of the previous century. Oleg Vladimirovich has also patented some of his inventions in the USSR.

Oleg Vladimirovich Losev was the first, who has observed fluorescence, while rectifier diodes, created on the basis of zinc oxide and silicone carbide, worked – this observarion the physicist made in the mid-twenties of the last century. In his article, which has come of the press in the magazine called Wireless Telegraphy and Telephony in 1927, Oleg Vladimirovich gave detailed description of fluorescence, appearing in carborundum (synonym for “silicone carbide”), as well as determined threshold current, required for such a phenomenon to surprise scientists.

Russian weather researchers have several stages of predicting where twisters and tornadoes are likely to appear. First stage is finding areas with powerful flaws, where wind speeds reach 20 ms and more, which is done 12, 24 and 36 hours in advance. For this purpose scientists use online method for predicting strong winds’ velocities, based upon considering extensive atmospheric parameters. Said technique, developed by weather professionals, is based on statistical analysis of hydrodynamic models of short-term weather predictions and succeeds in various territories of Russia and Ukraine. Briefly speaking, the map is covered with equal probability lines, which show areas, where dangerous winds can be expected.

Between 1924 and 1930 eminent phisicist has published 16 articles, which were dedicated to abovementioned effect – they covered wide range of its properties, such as emission spectra, voltage-current characteristics, as well as discovered nonthermal nature of the radiation. Furthermore, Losev has succeeded in developing radiation modulator by means of supplying alternating voltage with frequency reaching 78.5 kHz to contact between metla and semiconducting material.

It was 1929 when Oleg Vladimirovich Losev received the USSR patent No. 12191 for inventing light relay based on modulation principle mentioned earlier. Thus, since we consider Henry Round to be the discoverer of electroluminescence phenomenon, then Oleg Losev made an essential contribution in development of that very physical field, from which modern light diodes and optoelectronics appeared later.

Oleg Losev did his best to draw attention of most famous and well-known scientists to his discoveries. It is known that he wrote a letter to Albert Einstein, where he asked the genius to create theoretical explanations for these phenomena from the point of view quantum theory of light had at that time, but, unfortunately, he got no answer. Oleg Losev’s contribution to development of science was highly appreciated by foreigh experts. In 1976 Egon Loebner has published a thorough and detailed research on Losev’s works. Recently the university of Nizhny Novgorod has published collected articles of Oleg Losev, called “Ahead of the time” and telling about biography and scientific heritage of one of most eminent cientists of the pevious century –Oleg Vladimirovich Losev.

Kizilova Anna

Tags: Russian scientists Russian science    

Next Previous

You might also find interesting:

Yakov Zeldovich - Black Holes and Distant Galaxies George Gamow Father of Russian Brain Drain Sergey Korolev - Universe Beating in his Heart Leonard Eulers Scientific Heritage Vladimir Ivanovich Vernadsky Patriarch Of Geochemistry

Comment on our site

RSS   twitter      submit

New Year  Moscow  Russian art  Philharmonic Concerts  Russia Travel Tips  Omsk  active holidays in Russia  Priyutino Memorial Estate  Art Exhibitions  Leo Tolstoy  Sochi Olympics  Russian scientists  Ivan Pokhitonov  Maria Sharapova  videos from Russia  financial markets  Russian performance arts  Architecture of Russia  Immune Cells  Russian places of interest  Russian events  St. Petersburg  Vladimir  Russian bloggers  Vostok  Nature Reserves  Russian economy  Robots  Pobeda  Vladimir Potapov   Russian tourism  Boris Grebenshchikov  Russian business  Russian Cinema  Alrosa  Russian science  Yukos case  Cossacs  Mercedes-Benz Fashion Week Russia  Exhibitions in Moscow  Graphic Art  Plants  Krasnodar  VED  Russian regions  Krasnoyarsk  Quasicrystals  Russian festivals  Rurik Dynasty  Arctic capital 

Travel Blogs
Top Traveling Sites