Frequency characteristics of collimated blue light generated by four-wave mixing in cesium vapor.
Opt Lett
; 49(14): 3846-3849, 2024 Jul 15.
Article
en En
| MEDLINE
| ID: mdl-39008722
ABSTRACT
The frequency evaluation of collimated blue light (CBL) generated by parametric four-wave mixing (FWM) in hot atomic vapor is presented. The cesium (133Cs) atoms are excited from the 6S1/2 ground state to 8S1/2 excited state with the 852 and 795â
nm pump lasers, producing an optical field at 4.2â
µm through an amplified spontaneous emission via population inversion on the 8S1/2 â 7P3/2 transition and the 456â
nm CBL via FWM on the 7P3/2 â 6S1/2 transition. The frequency shift of 456â
nm CBL has been measured by velocity-selective optical pumping spectral technique when the frequency of any one of two pumping lasers is tuned. The ratio of the frequency shift of 456â
nm CBL to the two-photon frequency detuning of two pumping lasers is 0.8912, implying that the generated 4.2â
µm light frequency is also correspondingly shifted.
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MEDLINE
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En
Revista:
Opt Lett
Año:
2024
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Article
Pais de publicación:
Estados Unidos