Although well known for its near infrared emission, Nd:YLF is far less studied in the mid-infrared range (MIR). In this work, the polarized stimulated emission cross section of the decay to the I-4(15/2), at around 2 mu m and the branching ratios of all the radiative decay channels from F-4(3/2) to the lower levels, have been estimated by applying the beta-tau method. Moreover, the absorption of Nd:YLF crystal has been measured from the near infrared up to the crystal absorption edge of the spectrum in MIR. Finally, the emission from the first excited state to the sublevels of the ground state in mid infrared at around 4.9 and 5.9 mu m have been observed and discussed.
Mid-infrared spectroscopy of Nd:YLF crystal
F. GennariSecondo
;A. ToncelliUltimo
2022-01-01
Abstract
Although well known for its near infrared emission, Nd:YLF is far less studied in the mid-infrared range (MIR). In this work, the polarized stimulated emission cross section of the decay to the I-4(15/2), at around 2 mu m and the branching ratios of all the radiative decay channels from F-4(3/2) to the lower levels, have been estimated by applying the beta-tau method. Moreover, the absorption of Nd:YLF crystal has been measured from the near infrared up to the crystal absorption edge of the spectrum in MIR. Finally, the emission from the first excited state to the sublevels of the ground state in mid infrared at around 4.9 and 5.9 mu m have been observed and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
