2015
DOI: 10.1088/1054-660x/26/2/025001
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Reflectivity kinetics of saturable absorbers for laser mirrors

Abstract: The reflectivity kinetics of saturable absorbers based on semiconductor quantum wells was investigated with differential reflectivity accuracy by the pump–probe technique for energy fluxes (0.27–5.40) photons cm−2 using a femtosecond Yb3+ :KY(WO4)2 laser. Three kinds of saturable absorbers were investigated: absorbers based on multiple quantum wells with nano-structured barriers grown over a mirror; the same absorber grown over the substrate; absorbers on multiple quantum wells separated by thick barriers gro… Show more

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Cited by 7 publications
(5 citation statements)
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“…The recovery time for both shutters proved comparable at about 2 ps. This value, corresponding to electron-hole recombination, is shorter than value of about 8 ps for previously developed SESAMs with nanostructured barriers [15], and is remarkably shorter than the recovery time of several hundred picoseconds for quantum wells with thick barriers [16]. The need for further shortening of the recovery time is not evident.…”
Section: Discussionmentioning
confidence: 58%
“…The recovery time for both shutters proved comparable at about 2 ps. This value, corresponding to electron-hole recombination, is shorter than value of about 8 ps for previously developed SESAMs with nanostructured barriers [15], and is remarkably shorter than the recovery time of several hundred picoseconds for quantum wells with thick barriers [16]. The need for further shortening of the recovery time is not evident.…”
Section: Discussionmentioning
confidence: 58%
“…Двухфотонное поглощение необходимо учитывать при исследовании элементов зеркал с насыщающимся поглощением [1][2][3][4][5] -для гетероструктур, включающих слои квантовых ям, выращенных поверх подложки арсенида галлия. В данной работе исследована кинетика пропускания подложки GaAs ориентации (001) толщиной 400 микрон в области прозрачности.…”
Section: Doi 1034077/semicond2019-156unclassified
“…The kinetics of SESAM with nano-structured barriers was studied in [28] by applying the pump-probe technique with double modulation. The SESAM prepared for each laser could be different in the barrier thickness, in their structure and in the number of quantum wells.…”
Section: Sesams With Superlattice Barriersmentioning
confidence: 99%