An element for the amplification of a light by stimulated emission of radiation comprising: a piece of glass with a tubular structure formed therein to guide light; the tubular structure has a boundary region of average refractive index less than that of a majority of the piece of glass; and a plurality of centres in the piece of glass that amplify the guided light, the amplification being by stimulated emission of radiation when the centres are illuminated by another light. Also contemplated is a method of manufacturing said element that comprises the step of: translating a focal point of an electromagnetic radiation relative to a piece of glass to form a tubular structure to guide light, that has a boundary region of average refractive index less than that of a majority of the piece of glass, determined, at least in part, by the interaction between the electromagnetic radiation and glass.
|IPC||H01S 3/063,G02B 6/122,G02B 6/13,H01S 3/091,H01S 3/17|
|Publication status||Submitted - 9 Oct 2013|
Bibliographical noteDesignated States:
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR