Academic Journal
Excitation and relaxation dynamics in ultrafast laserirradiated optical glasses
| العنوان: | Excitation and relaxation dynamics in ultrafast laserirradiated optical glasses |
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| المؤلفون: | Mauclair, Cyril, Mermillod-Blondin, Alexandre, Bonse, Jörn, Mishchik, Konstantin, Rosenfeld, Arkadi, Colombier, Jean-Philippe, Stoian, Razvan |
| المساهمون: | Laboratoire Hubert Curien (LabHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI), BAM Bundesanstalt für Materialforschung u. -prüfung, ANR-11-BS04-0010,NANOFLAM,Contrôle de la FiLAMentation et de la génération de plasma avec les impulsions non-diffractantes femtoseconde en régime nonlinéaire. Applications à la NANO-structuration laser à ultra haut rapport de forme.(2011), ANR-11-BS09-0026,SMART_LASIR,SMART Fabrication par Lasers ultracourts des fonctions optiques 3D dans les chalcogénures avec contrôle adaptatif spatio-temporel intelligent. Applications en spectroscopie intégrée pour l'astrophysique IR(2011) |
| المصدر: | ISSN: 2095-4719. |
| بيانات النشر: | HAL CCSD Cambridge University Press |
| سنة النشر: | 2016 |
| المجموعة: | Université Jean Monnet – Saint-Etienne: HAL |
| مصطلحات موضوعية: | carrier plasmas, glasses, pulse shaping, refractive index engineering, ultrafast laser excitation, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic |
| الوصف: | International audience ; We discuss the dynamics of ultrashort pulsed laser excitation in bulk optical silica-based glasses (fused silicaand borosilicate BK7) well-above the permanent modification threshold. We indicate subsequent structural andthermomechanical energy relaxation paths that translate into positive and negative refractive index changes, compressionand rarefaction zones. If fast electronic decay occurs at low excitation levels in fused silica via self-trapping of excitons,for carrier densities in the vicinity of the critical value at the incident wavelength, persistent long-living absorptive statesindicate the achievement of low viscosity matter states manifesting pressure relaxation, rarefaction, void opening andcompaction in the neighboring domains. An intermediate ps-long excited carrier dynamics is observed for BK7 in therange corresponding to structural expansion and rarefaction. The amount of excitation and the strength of the subsequenthydrodynamic evolution is critically dependent on the pulse time envelope, indicative of potential optimization schemes. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | ujm-01432499; https://ujm.hal.science/ujm-01432499 |
| DOI: | 10.1017/hpl.2016.45 |
| الاتاحة: | https://ujm.hal.science/ujm-01432499 https://doi.org/10.1017/hpl.2016.45 |
| رقم الانضمام: | edsbas.FDE5386A |
| قاعدة البيانات: | BASE |
| DOI: | 10.1017/hpl.2016.45 |
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