激光技术
激光技術
격광기술
LASER TECHNOLOGY
2015年
1期
61-64
,共4页
衍射%纵向啁啾体光栅%传输矩阵法%衍射效率
衍射%縱嚮啁啾體光柵%傳輸矩陣法%衍射效率
연사%종향조추체광책%전수구진법%연사효솔
diffraction%longitudinal chirped volume grating%transfer matrix algorithm%diffraction efficiency
为了研究纵向啁啾体光栅的光谱衍射特性，采用传输矩阵方法进行了分析，研究了光栅的厚度、折射率调制系数和啁啾波长范围对纵向啁啾体光栅中心衍射效率的影响。结果表明，随着光栅厚度的增加，中心衍射效率随之增大；随着光栅折射率调制系数的增大，中心衍射效率也随之逐渐增加；而随着啁啾波长范围的增大，纵向啁啾体光栅的中心衍射效率则逐渐减小。此研究结果对大尺寸啁啾体光栅的设计制作有一定的参考价值。
為瞭研究縱嚮啁啾體光柵的光譜衍射特性，採用傳輸矩陣方法進行瞭分析，研究瞭光柵的厚度、摺射率調製繫數和啁啾波長範圍對縱嚮啁啾體光柵中心衍射效率的影響。結果錶明，隨著光柵厚度的增加，中心衍射效率隨之增大；隨著光柵摺射率調製繫數的增大，中心衍射效率也隨之逐漸增加；而隨著啁啾波長範圍的增大，縱嚮啁啾體光柵的中心衍射效率則逐漸減小。此研究結果對大呎吋啁啾體光柵的設計製作有一定的參攷價值。
위료연구종향조추체광책적광보연사특성，채용전수구진방법진행료분석，연구료광책적후도、절사솔조제계수화조추파장범위대종향조추체광책중심연사효솔적영향。결과표명，수착광책후도적증가，중심연사효솔수지증대；수착광책절사솔조제계수적증대，중심연사효솔야수지축점증가；이수착조추파장범위적증대，종향조추체광책적중심연사효솔칙축점감소。차연구결과대대척촌조추체광책적설계제작유일정적삼고개치。
In order to study diffraction characteristics of longitudinal chirped volume Bragg gratings, transfer matrix algorithm was used.Effects of the thickness, refractive index modulation and chirped wavelength range on the central diffraction efficiency of the longitudinal chirped volume Bragg gratings were calculated.The results show that central diffraction efficiency increases with the increase of the thickness and the refractive index modulation of the Bragg grating. However, with the increase of the chirped wavelength range, the central diffraction efficiency decreases.The research results have certain reference value for design and manufacture of large size of chirped volume Bragg gratings.
