Electronic spectroscopy of a cold SiO${}^{+}$ sample: Implications for optical pumping

Abstract

The dispersed fluorescence following pulsed dye laser excitation of the ${\text{B}}_2{\Sigma }^{+}-{\text{X}}^2{\Sigma }^{+}(0,0)$ band of a cold sample of SiO${}^{+}$ has been recorded and analyzed. The branching ratios for ${\text{B}}_2{\Sigma }^{+}(v=0)\to {\text{X}}^2{\Sigma }^{+}(v)$ and ${\text{B}}_2{\Sigma }^{+}(v=0)\to {\text{A}}^2{\Pi }_i(v)$ emission were determined and compared with values predicted based upon existing experimental and theoretical data. The experimentally determined branching ratios show that the ${\text{B}}_2{\Sigma }^{+}(v=0)\to {\text{X}}^2{\Sigma }^{+}(v)$ transitions are somewhat less diagonal than predicted. The implications for laser cooling of a trapped sample of SiO${}^{+}$ using broadband laser excitation are discussed.

References in corpus (4)

• Magneto-optical trapping of a diatomic molecule
• Optical pumping and vibrational cooling of molecules
• Sub-millikelvin dipolar molecules in a radio-frequency magneto-optical trap
• Efficient sympathetic motional ground-state cooling of a molecular ion

Cited by in corpus (6)

• Cooling of a Zero-Nuclear-Spin Molecular Ion to a Selected Rotational State
• Optical Pumping of TeH+: Implications for the Search for Varying mp/me
• IP determination and 1+1 REMPI spectrum of SiO at 210-220 nm with implications for SiO${}^{+}$ ion trap loading
• Electroweak Nuclear Properties from Single Molecular Ions in a Penning Trap
• High-resolution laser-induced fluorescence spectroscopy of ${}^{28}$Si${}^{16}$O${}^{+}$ and ${}^{29}$Si${}^{16}$O${}^{+}$ in a cryogenic buffer-gas cell
• Features of Molecular Structure Beneficial for Optical Pumping