Title:
MASER ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2014/027205
Kind Code:
A3
Abstract:
A maser assembly includes a pump light source; a maser material including molecules that are excited through the absorption of light (1) from the pump light source, and which subsequently transfer via intersystem crossing (9) into the sublevels of their triplet ground states, so causing a population inversion between two sublevels (16,18); an electromagnetic structure in which the masing material is disposed, and which supports a microwave mode that is both resonant in frequency with and magnetically coupled to the transition between these two sublevels; and where energy is supplied to the microwave mode through stimulated emission (25) across the transition at such a rate as to exceed the mode's electromagnetic losses, the microwave mode being a maser mode. The assembly includes provisions for effecting substantially continuous maser activity during operation of the assembly. The laser crystal may be a (perdeuterated) pentacene in p-terphenyl which is held at room temperature without an additional magnetic field and the dye molecules in the single crystal may be pumped by blue LED with a frequency conversion to the yellow and green with the help of a Ce:YAG fluorescent pump light concentrator.
Inventors:
OXBORROW MARK (GB)
Application Number:
PCT/GB2013/052175
Publication Date:
May 15, 2014
Filing Date:
August 15, 2013
Export Citation:
Assignee:
SEC DEP FOR BUSINESS INNOVATION & SKILLS OF HER MAJESTY S BRITANNIC GOVERNMENT (GB)
International Classes:
H01S1/02
Foreign References:
| JP2008117890A | 2008-05-22 | |||
| EP1437616A1 | 2004-07-14 |
Other References:
MARK OXBORROW ET AL: "Room-temperature solid-state maser", NATURE, vol. 488, no. 7411, 15 August 2012 (2012-08-15), pages 353 - 356, XP055088099, ISSN: 0028-0836, DOI: 10.1038/nature11339
J. KÖHLER ET AL: "On the intersystem crossing of pentacene in p-terphenyl", CHEMICAL PHYSICS LETTERS, vol. 250, no. 1, 1 February 1996 (1996-02-01), pages 137 - 144, XP055088243, ISSN: 0009-2614, DOI: 10.1016/0009-2614(95)01393-8
SHELL J ET AL: "A 32-GHz reflected-wave maser amplifier with wide instantaneous bandwidth", 19880525; 19880525 - 19880527, 25 May 1988 (1988-05-25), pages 789 - 792, XP010069988
See also references of EP 2885847A2
J. KÖHLER ET AL: "On the intersystem crossing of pentacene in p-terphenyl", CHEMICAL PHYSICS LETTERS, vol. 250, no. 1, 1 February 1996 (1996-02-01), pages 137 - 144, XP055088243, ISSN: 0009-2614, DOI: 10.1016/0009-2614(95)01393-8
SHELL J ET AL: "A 32-GHz reflected-wave maser amplifier with wide instantaneous bandwidth", 19880525; 19880525 - 19880527, 25 May 1988 (1988-05-25), pages 789 - 792, XP010069988
See also references of EP 2885847A2
Attorney, Agent or Firm:
WILLIAMS, Powell (London, Greater London WC1V 7QH, GB)
Download PDF: