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Dark-state resonances observed on the D2 line of potassium

  Articoli su Riviste JCR/ISI  (anno 2017)

Autori:  Krasteva A., Gateva S., Andreeva C., Alzetta G., Gozzini S., Moi L., Sarkisyan D., Nasyrov K., Cartaleva S

Affiliazione Autori:  Institute of Electronics, BAS, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria; Istituto Nazionale di Ottica del CNR – SS Pisa, Via Moruzzi 1, 56124 Pisa, Italy; Institute for Physical Research, NAS of Armenia, Ashtarak-2, 0203 Armenia; Institute of Automation and Electrometry SB RAS, Novosibirsk, Russia

Riassunto:  We report the first observation of sub-natural-width dark resonances of enhanced transparency on the D2 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 λ = 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 (~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

Rivista/Giornale:  Proceedings of SPIE, the International Society for Optical Engineering
Volume n.:  10226      Pagine da: 102260L-1  a: 102260L-8
Ulteriori informazioni:  doi: 10.1117/12.2264223
Parole chiave: dark state - sub-natural-width optical resonances


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