abstract |
(57) [Summary]nPROBLEM TO BE SOLVED: To convert light wavelength with high efficiency stably up to ultraviolet region. And excellent in moisture resistance.nSOLUTION: (A) Two O) ・ (B Two O Three ) x Table with chemical composition And the space group P2 1 2 1 2 1 That it belongs to It is a borate single crystal that is characteristic. Where A is Li, Two types selected from the group consisting of Na, K, Rb and Cs 1.5 <x <2.5. |