Continuous-wave ultraviolet laser action in strongly scattering Nd-doped alumina

Richard Laine

G. WSRTH B. Li and R.M. Laine (2002)

Optics Lett., 27:394-6.

We report electrically pumped, cw laser action near 405 nm from Nd3+-doped 𝛿-alumina nanopowders. To our knowledge, this is the first report of stimulated emission from the high-lying 𝐹2-excited states, achieved through feedback from strong elastic scattering of light over transport path lengths shorter than half a wavelength.

Nd-doped alumina, ultraviolet laser