Novel laser based on magnetic tunneling
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 exchang...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2005 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2005
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/121766 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862750247760953344 |
|---|---|
| author | Kadigrobov, A. Shekhter, R.I. Jonson, M. |
| author_facet | Kadigrobov, A. Shekhter, R.I. Jonson, M. |
| citation_txt | 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. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | 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.
|
| first_indexed | 2025-12-07T21:05:16Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-121766 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T21:05:16Z |
| publishDate | 2005 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Kadigrobov, A. Shekhter, R.I. Jonson, M. 2017-06-16T07:01:10Z 2017-06-16T07:01:10Z 2005 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. 0132-6414 PACS: 75.70.–i https://nasplib.isofts.kiev.ua/handle/123456789/121766 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. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкоразмерные и неупорядоченные системы Novel laser based on magnetic tunneling Article published earlier |
| spellingShingle | Novel laser based on magnetic tunneling Kadigrobov, A. Shekhter, R.I. Jonson, M. Низкоразмерные и неупорядоченные системы |
| title | Novel laser based on magnetic tunneling |
| title_full | Novel laser based on magnetic tunneling |
| title_fullStr | Novel laser based on magnetic tunneling |
| title_full_unstemmed | Novel laser based on magnetic tunneling |
| title_short | Novel laser based on magnetic tunneling |
| title_sort | novel laser based on magnetic tunneling |
| topic | Низкоразмерные и неупорядоченные системы |
| topic_facet | Низкоразмерные и неупорядоченные системы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/121766 |
| work_keys_str_mv | AT kadigrobova novellaserbasedonmagnetictunneling AT shekhterri novellaserbasedonmagnetictunneling AT jonsonm novellaserbasedonmagnetictunneling |