Photonic crystal resonant cavity, photonic crystal laser and manufacturing method thereof

The invention belongs to the technical field of photo communication and laser, relates to a photonic crystal resonant cavity, a photonic crystal laser and a manufacturing method thereof, in particularto a double frequency photonic crystal resonant cavity and a photonic crystal laser as well as a manufacturing method thereof. The photonic crystal resonant cavity provided by the invention is a one-dimensional photonic crystal resonant cavity which comprises a defection layer and is characterized in that the defection layer is filled with anisotropic material. The preferential anisotropic material is single shaft crystal. The invention also provides a photonic crystal laser comprising the photonic crystal resonant cavity and gain medium Er. The invention integrates the advantages of the photonic crystal with the double refraction laser to obtain a resonant cavity and a laser with the properties of small volume, low cost, small frequency difference or large frequency difference, high gainand high Q value.