A high-performance photoelectric functional crystal calcium borate thulium oxide crystal and its growth and application

A calcium borate oxygen, photoelectric function technology, applied in crystal growth, single crystal growth, single crystal growth and other directions, can solve the problems of application limitations, crystal growth difficulties, etc., to achieve a large allowable angle, high effective nonlinear optical coefficient, high The effect of optical transmittance
CN103422172BActive Publication Date: 2016-01-20SHANDONG UNIV
3 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2016-01-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to high-performance photoelectric functional calcium borate thulium oxide crystal and growth and application thereof. The formula of the calcium borate thulium oxide crystal is TmCa4O(BO3)3; the crystal in a non-centrosymmetric structure belongs to monoclinic m-point groups and is 101.12 DEG in cell parameter beta, boils at 1460 DEG C, and shows no change at the temperature from the room temperature to the boiling point. A growth method of the crystal includes preparation of polycrystalline material and growth by the Czochralski method; the high-quality calcium borate thulium oxide crystal 20-40mm in diameter and 20-50mm in height can be made. The TmCa4O(BO3)3 crystal is larger than 80% in optical transmittance under the frequency of 808nm-1100nm and 1300nm-156-nm, has an effective piezoelectric constant of deff=1pC / N-5pC / N and effective electromechanical coupling factor of keff=10-30%, and can be used as nonlinear optical crystals, laser crystals or piezoelectric crystals.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a high-performance photoelectric functional crystal calcium thulium borate crystal (TmCa 4 O(BO 3 ) 3 ) and its growth process and its application in the fields of laser, nonlinear optics and piezoelectricity belong to the field of crystal growth technology and application. Background technique

[0002] Rare earth calcium borate crystals (ReCa 4 O(BO 3 ) 3 , ReCOB, Re: rare earth element) belongs to the monoclinic system and has non-centrosymmetric structure characteristics, so it has nonlinear optical effect and piezoelectric effect, and can also be used as a laser host crystal. For the compound crystals of this configuration, in 1991, Khamaganora et al. first studied the synthesis and structure of SmCOB crystals; in 1993, Russian scientist A.B.Iliukhin synthesized TbCOB, LuCOB and GdCOB crystals by flux method, and studied the structural characteristics of the crystals . In 1996, Aka et al. used the Czochralski method ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More