Matches in SemOpenAlex for { <https://semopenalex.org/work/W2136571856> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2136571856 abstract "The electronic energy level schemes within the 4f subshells of rare-earth ions give rise to a number of fluorescence transitions ranging from the near-UV to the mid-IR spectral region. A large variety of laser lines have been demonstrated based on these fluorescence transitions. Depending on the energy level scheme of the individual rare-earth ion, the characteristics of the host material chosen, the specifications of the pump source and resonator configuration, and the resulting population mechanisms within the energy level scheme, these lasers may operate in quite different regimes. Specifically, additional absorption of pump photons at transitions originating in highly populated excited states as well as energy-transfer processes between neighboring rare-earth ions can have a significant impact on the population dynamics of a rare-earth-ion laser system.Two examples shall be discussed in my presentation. First, the Nd3+ laser at 1 µm was considered as an almost ideal four-level laser system for many years. However, with increasing pump powers available, it has turned out that energy-transfer-upconversion processes from the 4F3/2 upper laser level may lead to a reduced storage time and subsequent multiphonon relaxations can generate significant extra heat dissipation in the crystal with its undesired consequences of thermal lensing and rod fracture, when the system is operated in a regime of higher excitation density such as a Q-switched laser or as an amplifier [1]. Second, the erbium 3-µm laser suffers from the long lifetime of its lower laser level. Depending on the host geometry, pump source, and dopant concentration, this laser was operated in three regimes [2] in which the problem of the depopulation of the lower laser level was solved in different ways: a) pump excited-state absorption and cascade lasing, b) energy-transfer to a co-doped rare-earth ion, and c) energy-transfer upconversion and energy recycling to the upper laser level.[1] M. Pollnau, P.J. Hardman, M.A. Kern, W.A. Clarkson, D.C. Hanna, Phys. Rev. B 1998, 58, 16076.[2] M. Pollnau, S.D. Jackson, IEEE J. Select. Topics Quantum Electron. 2001, 7, 30." @default.
- W2136571856 created "2016-06-24" @default.
- W2136571856 creator A5031372095 @default.
- W2136571856 date "2003-08-01" @default.
- W2136571856 modified "2023-10-03" @default.
- W2136571856 title "Impact of the spectroscopic properties of rare-earth ions on solid-state laser systems" @default.
- W2136571856 hasPublicationYear "2003" @default.
- W2136571856 type Work @default.
- W2136571856 sameAs 2136571856 @default.
- W2136571856 citedByCount "0" @default.
- W2136571856 crossrefType "journal-article" @default.
- W2136571856 hasAuthorship W2136571856A5031372095 @default.
- W2136571856 hasConcept C10730404 @default.
- W2136571856 hasConcept C11630735 @default.
- W2136571856 hasConcept C120665830 @default.
- W2136571856 hasConcept C121332964 @default.
- W2136571856 hasConcept C125287762 @default.
- W2136571856 hasConcept C144024400 @default.
- W2136571856 hasConcept C145148216 @default.
- W2136571856 hasConcept C149923435 @default.
- W2136571856 hasConcept C178790620 @default.
- W2136571856 hasConcept C184779094 @default.
- W2136571856 hasConcept C185592680 @default.
- W2136571856 hasConcept C192562407 @default.
- W2136571856 hasConcept C2779580267 @default.
- W2136571856 hasConcept C2908647359 @default.
- W2136571856 hasConcept C513967374 @default.
- W2136571856 hasConcept C520434653 @default.
- W2136571856 hasConceptScore W2136571856C10730404 @default.
- W2136571856 hasConceptScore W2136571856C11630735 @default.
- W2136571856 hasConceptScore W2136571856C120665830 @default.
- W2136571856 hasConceptScore W2136571856C121332964 @default.
- W2136571856 hasConceptScore W2136571856C125287762 @default.
- W2136571856 hasConceptScore W2136571856C144024400 @default.
- W2136571856 hasConceptScore W2136571856C145148216 @default.
- W2136571856 hasConceptScore W2136571856C149923435 @default.
- W2136571856 hasConceptScore W2136571856C178790620 @default.
- W2136571856 hasConceptScore W2136571856C184779094 @default.
- W2136571856 hasConceptScore W2136571856C185592680 @default.
- W2136571856 hasConceptScore W2136571856C192562407 @default.
- W2136571856 hasConceptScore W2136571856C2779580267 @default.
- W2136571856 hasConceptScore W2136571856C2908647359 @default.
- W2136571856 hasConceptScore W2136571856C513967374 @default.
- W2136571856 hasConceptScore W2136571856C520434653 @default.
- W2136571856 hasLocation W21365718561 @default.
- W2136571856 hasOpenAccess W2136571856 @default.
- W2136571856 hasPrimaryLocation W21365718561 @default.
- W2136571856 hasRelatedWork W1001245796 @default.
- W2136571856 hasRelatedWork W1499674058 @default.
- W2136571856 hasRelatedWork W1623221539 @default.
- W2136571856 hasRelatedWork W1666068352 @default.
- W2136571856 hasRelatedWork W1969373405 @default.
- W2136571856 hasRelatedWork W2054778794 @default.
- W2136571856 hasRelatedWork W2070532299 @default.
- W2136571856 hasRelatedWork W2096224831 @default.
- W2136571856 hasRelatedWork W2137372524 @default.
- W2136571856 hasRelatedWork W2483631565 @default.
- W2136571856 hasRelatedWork W2485539252 @default.
- W2136571856 hasRelatedWork W2588356750 @default.
- W2136571856 hasRelatedWork W2901122316 @default.
- W2136571856 hasRelatedWork W2910811465 @default.
- W2136571856 hasRelatedWork W2917404046 @default.
- W2136571856 hasRelatedWork W2978427013 @default.
- W2136571856 hasRelatedWork W3091432090 @default.
- W2136571856 hasRelatedWork W3209773864 @default.
- W2136571856 hasRelatedWork W950380894 @default.
- W2136571856 hasRelatedWork W2226886549 @default.
- W2136571856 isParatext "false" @default.
- W2136571856 isRetracted "false" @default.
- W2136571856 magId "2136571856" @default.
- W2136571856 workType "article" @default.