Compact holographic solid-state distributed-feedback laser

Lasing was achieved in a holographic laser with a distributed feedback (DFB) based on an epoxy polymer matrix activated with rhodamine 6G. The temperature sensitivity of the emission wavelength was one-thirtieth of the sensitivity of a DFB laser with a liquid dye solution. Excitation with the second harmonic of a YAG : Nd³⁺ laser, in the form of pulses of 15 ns duration and 2 mJ energy, made it possible to achieve an efficiency of 14% for this solid-state laser emitting at the wavelength of 587 nm when the spectral line width was 0.01 nm.