Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 7958-7965 |
| Seitenumfang | 8 |
| Fachzeitschrift | Thin Solid Films |
| Jahrgang | 515 |
| Ausgabenummer | 20-21 |
| Publikationsstatus | Veröffentlicht - 31 Juli 2007 |
| Extern publiziert | Ja |
Abstract
The main objective of the present work was to fabricate and find evidence of fluorescence in the optical films of some well established laser materials and as well as some other new materials have also been probed. Materials such as Nd:Yttrium Aluminum Garnet (Nd:YAG), Ti:Sapphire, NdF3 and YbF3 were deposited on BK7 type optical glass, fused silica (Suprasil), Sapphire and YAG substrates by conventional electron beam evaporation processes. In case of Nd:YAG, the films were prepared by using pure single crystals of Nd:YAG as evaporation material. Samples with higher Nd content were also prepared in order to enhance the absorption in the film at the pump wavelength. A theoretical analysis for the lasing action in the Nd:YAG film has also been made and parameters like gain, threshold population inversion, threshold power etc. have been calculated for the realisation of laser action in thin films. In case of Ti:Sapphire, the films were prepared by an Ion Beam Sputtering process. It has been demonstrated that fluorescence can be observed in Electron-beam deposited films of Nd:YAG and NdF3 when pumped with a diode laser at 802 nm. The maximum peak emission was observed at 1066 nm in case of Nd:YAG and 1046 nm in case of NdF3. A Ti:Sapphire sample has also been excited using an Nd:YAG laser at 532 nm. Here a broad band fluorescence spectrum was observed. Films of YbF3 and YbF3 + NdF3 (co-deposition) prepared by Electron Beam Evaporation were also studied.
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- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Oberflächen und Grenzflächen
- Werkstoffwissenschaften (insg.)
- Oberflächen, Beschichtungen und Folien
- Werkstoffwissenschaften (insg.)
- Metalle und Legierungen
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Thin Solid Films, Jahrgang 515, Nr. 20-21, 31.07.2007, S. 7958-7965.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Growth and fluorescence measurements of neodymium
T2 - Yttrium Aluminum Garnet, neodymium fluoride, Ti:Sapphire, ytterbium fluoride and mixture of neodymium fluoride with ytterbium fluoride thin films
AU - Akhtar, S. M.Javed
AU - Lappschies, Marc
AU - Ristau, Detlev
AU - Ashraf, Muhammad Waseem
AU - Ahmed, Mushtaq
PY - 2007/7/31
Y1 - 2007/7/31
N2 - The main objective of the present work was to fabricate and find evidence of fluorescence in the optical films of some well established laser materials and as well as some other new materials have also been probed. Materials such as Nd:Yttrium Aluminum Garnet (Nd:YAG), Ti:Sapphire, NdF3 and YbF3 were deposited on BK7 type optical glass, fused silica (Suprasil), Sapphire and YAG substrates by conventional electron beam evaporation processes. In case of Nd:YAG, the films were prepared by using pure single crystals of Nd:YAG as evaporation material. Samples with higher Nd content were also prepared in order to enhance the absorption in the film at the pump wavelength. A theoretical analysis for the lasing action in the Nd:YAG film has also been made and parameters like gain, threshold population inversion, threshold power etc. have been calculated for the realisation of laser action in thin films. In case of Ti:Sapphire, the films were prepared by an Ion Beam Sputtering process. It has been demonstrated that fluorescence can be observed in Electron-beam deposited films of Nd:YAG and NdF3 when pumped with a diode laser at 802 nm. The maximum peak emission was observed at 1066 nm in case of Nd:YAG and 1046 nm in case of NdF3. A Ti:Sapphire sample has also been excited using an Nd:YAG laser at 532 nm. Here a broad band fluorescence spectrum was observed. Films of YbF3 and YbF3 + NdF3 (co-deposition) prepared by Electron Beam Evaporation were also studied.
AB - The main objective of the present work was to fabricate and find evidence of fluorescence in the optical films of some well established laser materials and as well as some other new materials have also been probed. Materials such as Nd:Yttrium Aluminum Garnet (Nd:YAG), Ti:Sapphire, NdF3 and YbF3 were deposited on BK7 type optical glass, fused silica (Suprasil), Sapphire and YAG substrates by conventional electron beam evaporation processes. In case of Nd:YAG, the films were prepared by using pure single crystals of Nd:YAG as evaporation material. Samples with higher Nd content were also prepared in order to enhance the absorption in the film at the pump wavelength. A theoretical analysis for the lasing action in the Nd:YAG film has also been made and parameters like gain, threshold population inversion, threshold power etc. have been calculated for the realisation of laser action in thin films. In case of Ti:Sapphire, the films were prepared by an Ion Beam Sputtering process. It has been demonstrated that fluorescence can be observed in Electron-beam deposited films of Nd:YAG and NdF3 when pumped with a diode laser at 802 nm. The maximum peak emission was observed at 1066 nm in case of Nd:YAG and 1046 nm in case of NdF3. A Ti:Sapphire sample has also been excited using an Nd:YAG laser at 532 nm. Here a broad band fluorescence spectrum was observed. Films of YbF3 and YbF3 + NdF3 (co-deposition) prepared by Electron Beam Evaporation were also studied.
KW - Flourescence
KW - Nd:YAG films
KW - Planar waveguide laser
KW - Ti:Sapphire film
UR - http://www.scopus.com/inward/record.url?scp=34547688854&partnerID=8YFLogxK
U2 - 10.1016/j.tsf.2007.03.053
DO - 10.1016/j.tsf.2007.03.053
M3 - Article
AN - SCOPUS:34547688854
VL - 515
SP - 7958
EP - 7965
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
IS - 20-21
ER -