Photon-phonon collaboratively pumped laser.

ABSTRACT: In 1917, Einstein considered stimulated photon emission of electron radiation, offering the theoretical foundation for laser, technically achieved in 1960. However, thermal phonons along with heat creation of non-radiative transition, are ineffective, even playing a detrimental role in lasing efficiency. Here, we realize a photon-phonon collaboratively pumped laser enhanced by heat in a counterintuitive way. We observe a laser transition from phonon-free 1064 nm lasing to phonon-pumped 1176 nm lasing in Nd:YVO₄ crystal, associated with the phonon-pumped population inversion under high temperatures. Moreover, an additional temperature threshold (T_th) appears besides the photon-pump power threshold (P_th), and a two-dimensional lasing phase diagram is verified

SUBMITTER: Fu Y 

PROVIDER: S-EPMC10703827 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature