Method of fabricating tubular laser light source, tubular laser light source and detection device using tubular laser light source

A method of fabricating a tubular laser light source that oscillates laser light outwardly of a tube wall based on light emitted from a fluorescent substance or scattered by a scattering substance, including:

• a tube preparation step of preparing a resin tube that has the tube wall impregnable with a solution including a fine substance and is made of a light-transmitting resin material;
• a solution preparation step of preparing a solution that includes a fine fluorescent substance that emits fluorescence or a fine scattering substance that scatters light as an oscillation material;
• and
• an impregnation step of causing the resin tube to be immersed in the solution and causing the tube wall of the resin tube to be impregnated with the oscillation material.