WebDec 10, 2011 · The stimulated emission cross section of laser transition is an important parameter in a laser gain medium. This parameter ... [15] and the threshold formula method [16]. In the laser efficiency comparison method, the accuracy of the stimulated emission cross section value of the reference Stimulated emission cross section at WebStimulated emission [8] and laser operation [9] based on this material have been realized. ... [I31 derived a relation to determine the emission cross section from the measured absorption cross section. ... It should be noted that this formula is an exact expression only for cross sections which are comprised of oul(v) ...
Einstein coefficients - Wikipedia
WebAbsorption cross-section, σ a (λ), and stimulated emission cross-section, σ em (λ), spectra of (a) TPB neat thin film (solid curves) and of tetrahydrofuran (THF) solution (dashed... Webabsorption cross-section α: () () 2 2 / int / / 4 k kk k kk total energy absorbed unit time total incident ensity energy unit time area w BU IcU B cc α ω ωω ω πω μ = ⋅ ⋅ == == A AA A AA = … thickness monitoring isotope used
X-Ray Data Booklet Section 5.5 USEFUL EQUATIONS
Web2, in terms of only the spontaneous emission rate A 21, the stimulated transition rate R(I), and the total population density N= N 1 + N 2. (b) Using the same procedure, solve for Nss 1 and obtain an expression for the steady-state population di erence N. Recalling that the stimulated transition rate can be written as R(I) = I (˙= h! o), WebThe stimulated emission cross sections for these crystals were determined using the Füchtbauer–Ladenburg (F–L) formula at each different temperature. The absorption … WebThe stimulated emission cross sections for these crystals were determined using the Füchtbauer–Ladenburg (F–L) formula at each different temperature. The absorption spectra at room temperature were used to calculate the 4 F 3/2 → 4 I 11/2 stimulated-emission cross section and the 4 F 3/2 radiative lifetime according to Judd–Ofelt ... thickness monitor mtm-10