Abstract
We experimentally demonstrate the control of the single and two-photon fluorescence (SPF and TPF) in Er3 ions by shaping the femtosecond laser pulse with a π or square phase modulation. With the low laser intensity (8.4 × 1010 W/cm2), SPF keeps a constant while TPF is effectively suppressed by the two control schemes. With the high laser intensity (1.2 × 1013 W/cm2), both SPF and TPF are simultaneously enhanced or suppressed by the π phase modulation, and SPF is enhanced while TPF is effectively suppressed by the square phase modulation. The up/down-conversion fluorescence enhancement, suppression, or tuning by the optical control method can greatly expand its applications in various related fields.
| Original language | English |
|---|---|
| Article number | 014101 |
| Journal | Applied Physics Letters |
| Volume | 104 |
| Issue number | 1 |
| DOIs | |
| State | Published - 6 Jan 2014 |