| 摘要 |
A lucent waveguide plasma light source (LUWPL) (1) has a quartz waveguide body (2) with a central through bore (3). The bore has orifices (4, 5) at its opposite ends, opening centrally of flat, end faces (6,7) of the body (2). Between these the body has a circular cylindrical periphery (8). A drawn quartz tube (10) is inserted into the body. The tube has its one end (11) closed and a collar (12) which locates the tube in the bore and it is fused to the faces (6, 7), at the orifices of the bore. The tube is evacuated and charged with excitable material (1) and closed as a sealed void (16) which extends at least to the fusion between the body and the tube at the orifice of the bore. A Faraday cage (21) and an antenna (22) in a bore (23) in the body are provided for feeding microwave energy to the light source. When powered with microwaves, resonance is established in the wave guide and a plasma is established in the void. Light from this radiates from the void and leaves the waveguide and the Faraday cage radially of the periphery (8). |
