We present a transportable effusive atomic beam apparatus for cascaded two-photon spectroscopy of... more We present a transportable effusive atomic beam apparatus for cascaded two-photon spectroscopy of the dipole-forbidden transition (6s(2)(1)S0↔ 6s7s (1)S0) of Yb atoms. An ohmic-heating effusive oven is designed to have a reservoir volume of 1.6 cm(3) and a high degree of atomic beam collimation angle of 30 mrad. The new atomic beam apparatus allows us to detect the spontaneously cascaded two-photons from the 6s7s(1)S0 state via the intercombination 6s6p(3)P1 state with a high signal-to-noise ratio even at the temperature of 340 °C. This is made possible in our apparatus because of the enhanced atomic beam flux and superior detection solid angle.
We study a non-degenerate correlated two-photon generation with narrow bandwidths of 50 MHz by us... more We study a non-degenerate correlated two-photon generation with narrow bandwidths of 50 MHz by using a diamond atomic system in the collimated Yb atomic beam. We excited the 6s2 1S0 atoms into the 6s7s 1S0 excited state by the resonant two-photon transition via the intermediate 6s6p 1P1 state. Then, the excited atoms decay spontaneously into the 6s2 1S0 ground state via the inter-combination 6s6p 3P1 state. We are focusing on the closed-loop two-photon absorption/excitation path through which correlated two photons having the wavelengths of 611.3 nm (Stokes) and 556.8 nm (anti-Stokes) can be generated efficiently. We performed first a two-photon absorption spectroscopy for the 1S0-1P1-1S0 two-photon transitions. An ECDL at 399 nm was used to excite the 1S0-1P1 transition and another ECDL at 1077 nm was used to excite the 1P1-1S0 transition. From the spontaneous two-photon emission process, we were able to detect correlated two-photons at 611.3 nm and 555.8 nm at the plane perpendicu...
We present a transportable effusive atomic beam apparatus for cascaded two-photon spectroscopy of... more We present a transportable effusive atomic beam apparatus for cascaded two-photon spectroscopy of the dipole-forbidden transition (6s(2)(1)S0↔ 6s7s (1)S0) of Yb atoms. An ohmic-heating effusive oven is designed to have a reservoir volume of 1.6 cm(3) and a high degree of atomic beam collimation angle of 30 mrad. The new atomic beam apparatus allows us to detect the spontaneously cascaded two-photons from the 6s7s(1)S0 state via the intercombination 6s6p(3)P1 state with a high signal-to-noise ratio even at the temperature of 340 °C. This is made possible in our apparatus because of the enhanced atomic beam flux and superior detection solid angle.
We study a non-degenerate correlated two-photon generation with narrow bandwidths of 50 MHz by us... more We study a non-degenerate correlated two-photon generation with narrow bandwidths of 50 MHz by using a diamond atomic system in the collimated Yb atomic beam. We excited the 6s2 1S0 atoms into the 6s7s 1S0 excited state by the resonant two-photon transition via the intermediate 6s6p 1P1 state. Then, the excited atoms decay spontaneously into the 6s2 1S0 ground state via the inter-combination 6s6p 3P1 state. We are focusing on the closed-loop two-photon absorption/excitation path through which correlated two photons having the wavelengths of 611.3 nm (Stokes) and 556.8 nm (anti-Stokes) can be generated efficiently. We performed first a two-photon absorption spectroscopy for the 1S0-1P1-1S0 two-photon transitions. An ECDL at 399 nm was used to excite the 1S0-1P1 transition and another ECDL at 1077 nm was used to excite the 1P1-1S0 transition. From the spontaneous two-photon emission process, we were able to detect correlated two-photons at 611.3 nm and 555.8 nm at the plane perpendicu...
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Papers by minsoo song