Optical Amplification at 1.5 µm in Er^III Coordination Polymer-Doped Waveguides Based on Intramolecular Energy Transfer.

ABSTRACT: 9,9-bis (diphenylphosphorylphenyl) fluorene (FDPO) and dibenzotetrathienoacene (DBTTA), are synthesized as the neutral and anionic ligands, respectively, to prepare the Er^III coordination polymer [Er(DBTTA)₃(FDPO)]_n. Based on the intramolecular energy transfer, optical gains at 1.5 µm are demonstrated in [Er(DBTTA)₃(FDPO)]_n-doped polymer waveguides under excitations of low-power light-emitting diodes (LEDs) instead of laser pumping. A ligand-sensitization scheme between organic ligands and Er³⁺ ions under an excitation of an ultraviolet (UV) LED is established. Relative gains of 10.5 and 8.5 dB cm^-1 are achieved at 1.53 and 1.55 µm, respectively, on a 1-cm-long SU-8 channel waveguide with a cross-section of 2 × 3 

SUBMITTER: Shi X 

PROVIDER: S-EPMC11336911 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature