LASER DEVICE

摘要

A laser device incorporates a rectangular multi-mode beamsplitter waveguide (20) connected at one end to a retro-reflecting mirror (26). The beamsplitter waveguide (20) is connected at a second end to an output coupling waveguide (22) and a reflection coupling waveguide (24). The reflection coupling waveguide (24) is terminated by a second retro-reflecting mirror (27). Radiation produced within the device is reflected by me mirror (26) and coupled to the two coupling waveguides in a manner such that a partially reflecting mirror is not required at an output to the device.