دورية أكاديمية
Rare Earth Laser Engineering Program. Part I
| العنوان: | Rare Earth Laser Engineering Program. Part I |
|---|---|
| المؤلفون: | Caird, John A. |
| المساهمون: | HUGHES AIRCRAFT CO CULVER CITY CA LASER SYSTEMS DIV |
| المصدر: | DTIC AND NTIS |
| سنة النشر: | 1973 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Inorganic Chemistry, Lasers and Masers, RARE EARTH ELEMENTS), (*LASERS, COMPUTER PROGRAMS, PHONONS, MOLECULAR ENERGY LEVELS, IONS, PHASE STUDIES, DOPING, TRANSPORT PROPERTIES, THEORY, INTENSITY, OSCILLATORS, LINE SPECTRA, PRASEODYMIUM, NEODYMIUM, PROMETHIUM, SAMARIUM, GADOLINIUM, TERBIUM, DYSPROSIUM, HOLMIUM, ERBIUM, THULIUM, INJECTION LASERS, ROOM TEMPERATURE, CONTINUOUS WAVES, RARE EARTH LASERS |
| الوصف: | This report discusses the application of current theories of radiative and non-radiative relaxation processes to the evaluation of crystalline rare earth laser devices. A computer program was developed to evaluate radiative oscillator strengths and transition rates between energy levels of trivalent rare earth ions doped in crystals. Non-radiative relaxation rates were computed using a phenomenological theory of multiphonon emission. A listing of the computer program is included in the appendix along with a detailed description of its operation. The analysis was applied first to some fifteen known rare earth laser devices to establish a basis for comparison with predictions. The program was then used to study the possibility of laser emission form a large number of energy levels throughout the rare earth series. This resulted in the identification of many transitions with significant potential for laser action with wavelengths varying from about 0.5 microns to 3.25 microns. Recommendations for future work include fabrication of predicted laser devices along with extensions of the theoretical models. (Author) ; Prepared in cooperation with University of Southern California, Los Angeles. Dept. of Physics. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| العلاقة: | http://www.dtic.mil/docs/citations/AD0914193Test |
| الإتاحة: | http://www.dtic.mil/docs/citations/AD0914193Test http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0914193Test |
| حقوق: | APPROVED FOR PUBLIC RELEASE |
| رقم الانضمام: | edsbas.7EB60727 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |