Инд. авторы:	Krasteva A., Gateva S., Andreeva C., Alzetta G., Gozzini S., Moi L., Sarkisyan D., Nasyrov K., Cartaleva S.
Заглавие:	Dark-state resonances observed on the D-2 line of potassium
Библ. ссылка:	Krasteva A., Gateva S., Andreeva C., Alzetta G., Gozzini S., Moi L., Sarkisyan D., Nasyrov K., Cartaleva S. Dark-state resonances observed on the D-2 line of potassium // Proceedings of SPIE - The International Society for Optical Engineering. - 2017. - Vol.10226. - Art.UNSP 102260L. - ISSN 0277-786X.
Внешние системы:	DOI: 10.1117/12.2264223; SCOPUS: 2-s2.0-85017350483; WoS: 000394538400020;
Реферат:	eng: We report the first observation of sub-natural-width dark resonances of enhanced transparency on the D-2 line of potassium, contained in an optical cell with reduced (8mm) dimensions and buffered by 30Torr of Ne. The Potassium vapours are irradiated by a frequency modulated DFB diode laser light (with lambda = 766.7nm and 2MHz bandwidth), and are placed in orthogonal to the light magnetic field scanned around zero value. Very good signal-to-noise ratio and narrow (similar to 20kHz) dark resonances are observed and studied in unshielded laboratory environment. The dark resonance formation is related to coherent superposition of the ground-state Zeeman sublevels by respective components of the frequency-modulated light.
Ключевые слова:	ABSORPTION; TRANSITIONS; SPECTROSCOPY; TRANSPARENCY; VAPOR; sub-natural-width optical resonances; magnetic field; diode-lasers; coherent laser spectroscopy; dark state; alkali atom vapor; LASER; RB;
Издано:	2017