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dc.contributor.author Kadigrobov, A.
dc.contributor.author Shekhter, R.I.
dc.contributor.author Jonson, M.
dc.date.accessioned 2017-06-16T07:01:10Z
dc.date.available 2017-06-16T07:01:10Z
dc.date.issued 2005
dc.identifier.citation Novel laser based on magnetic tunneling / A. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2005. — Т. 31, № 3-4. — С. 463-470. — Бібліогр.: 26 назв. — англ. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 75.70.–i
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/121766
dc.description.abstract A new principle for a compact spin-based solid-state laser is proposed. It operates in the 1–100 THz regime, which is difficult to reach with small size lasers. Spin-flip processes in ferromagnetic conductors form a basis — the mechanism is due to a coupling of light to the exchange interaction in magnetically ordered conductors via the dependence of the exchange constant on the conduction electron momenta. The interaction strength is proportional to the large exchange energy and exceeds the Zeeman interaction by orders of magnitude. A giant lasing effect is predicted in a system where a population inversion has been created by injection of spin-polarized electrons from one ferromagnetic conductor into another through an intermediate tunnel region or weak link; the magnetizations of the two ferromagnets have different orientations. We show that the laser frequency will be in the range 1–100 THz if the experimental data for ferromagnetic manganese perovskites with nearly 100% spin polarization are used. The optical gain is estimated to be gopt ~ 10⁷ cm⁻¹. This exceeds the gain of conventional semiconductor lasers by 3 or 4 orders of magnitude. An experimental configuration is proposed in order to solve heating problems at a relatively high threshold current density. uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Низкоразмерные и неупорядоченные системы uk_UA
dc.title Novel laser based on magnetic tunneling uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA

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