Wideband noise characteristics of a lead-salt diode laser: Possibility of quantum noise limited TDLAS performance
Anno: 1989
Autori: Werle P., Slemr F., Gehrtz M., Bräuchle C.
Affiliazione autori: Fraunhofer Institute for, 19 Kreuzeckbahnstr, Garmisch-Partenkirchen, D-8100, Germany; IBM Germany, Plant Mainz Laboratories, P.O. Box 2540, Mainz, D-6500, Germany; University of Munich, Institute for Physical Chemistry, 11 Sophienstr, Munich, D-8000, Germany
Abstract: The wideband noise characteristics of a PbEuSe molecular beam epitaxy diode laser have been measured up to 500 MHz. The cutoff of the frequency dependent (1/f type) laser noise contribution was found to be 170 MHz for this particular laser. Above this cutoff frequency the photon shot noise dominates, as was demonstrated. A noise reduction of more than 2 orders of magnitude was observed in the shot noise limited domain when compared with the 1/f noise dominated region below 1 MHz. This finding indicates that a similar 2 orders of magnitude sensitivity improvement can be achieved in tunable diode laser absorption spectroscopy when frequency modulation techniques are applied instead of the more conventional derivative modulation below 1 MHz.
Giornale/Rivista: APPLIED OPTICS
Volume: 28 (9) Da Pagina: 1638 A: 1642
Parole chiavi: DIODE-LASERDOI: 10.1364/AO.28.001638Citazioni: 35dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui