photorefractive 中文意思是什麼

photorefractive 解釋
光致折變的
  1. Doped linbo3 ) have been considered as one kind of the most important materials for vhs owing to wider dynamic range and their commercial availability in large size. however, the volume holographic gratings in photorefractive crystals are liable to dark decay and erasure under readout illumination

    體全息存儲的首選記錄材料是光折變晶體（如fe : linbo _ 3 ） ，但直接存儲在晶體中的信息容易受光和熱的影響而丟失。
  2. The changes of corneal endothelia after excimer laser photorefractive keratectomy

    準分子激光屈光性角膜切削術治療高度近視探討
  3. Corneal topography after photorefractive keratectomy for correction of myopia

    治療近視術后角膜地形圖分析
  4. The principle and implementing of excimer laser photorefractive keratectomy

    伴眼球震顫的近視準分子激光屈光手術的觀察
  5. Excimer laser photorefractive keratectomy for myopia : one year follow - up

    準分子激光角膜切削術治療低中度近視術后3年療效分析
  6. A immunohistochemical study of rabbit cornea after excimer laser photorefractive keratectomy

    術后角膜創面的免疫組織化學研究
  7. Excimer laser photorefractive keratectomy in the treatment of severe myopia

    準分子激光屈光性角膜切削術治療近視和近視散光3年療效分析
  8. Clinical analysis of excimer laser photorefractive keratectomy for treatment of myopia

    準分子激光屈光性角膜切削術治療近視的療效分析
  9. Excimer laser photorefractive keratectomy for lower to moderate myopia : 3 year follow - up

    準分子激光屈光性角膜切削術對角膜內皮細胞的影響
  10. Haze following excimer laser photorefractive keratectomy and full - refraction prior to prk

    準分子激光角膜切削術后角膜上皮下混濁與術前總屈光度的關系
  11. Radial keratotomy （ rk ） and photorefractive keratectomy （ prk ) are other refractive surgeries used to reshape the cornea

    其他用於角膜重新塑形的外科手術還有放射狀角膜切開術（ rk ）和光性折射角膜切削術（ prk ） 。
  12. Methods : we examined 102 patients who underwent photorefractive keratectomy and received topical steroids ( either fluorometholone 0. 1 % or prednisolone acetate 0. 5 % alone or combined ) as part of postoperative therapy

    方法：我們檢查了103名已行屈光性角膜切除術並以局部類固醇（ 0 . 1丙酮縮氟氫羥龍或0 . 5潑尼松龍或二者兼有）作為部分術后治療的病人。
  13. In the end, the properties of volume holograms and the filtering principles of multiple photorefractive volume gratings are discussed by using volume holograms theory and bragg condition

    最後從體全息理論出發，結合布拉格條件，討論了多重體全息相位柵的濾波原理。
  14. And the photorefractive edge - enhancement joint transform correlator can provide higher 1 correlation peak and narrower correl ation width with the presence of electric - fields

    應用於光折變邊緣增強聯合變換相關器時，通過外加電場，可使聯合變換相關器的相關識別性能進一步改善。
  15. Then we turned in the input laser to observe the decline of phase conjugate reflectivity. measuring dark storage time, we found that the phase conjugate reflectivity declined to 50 % of steady - state value when photorefractive crystal was in dark condition for 30 minutes. even after 9 hours, there still existed remaining reflectivity, which could n ' t be measured by our detector

    因而研究了晶體內位相共軛光柵存儲特性，即觀察位相共軛光柵形成后在黑暗條件下能存儲的時間，實驗結果得出位相共軛光柵在黑暗中30分鐘后，位相共軛反射率下降到原來的50 ，而在黑暗中9小時后，位相共軛光非常微弱，無法測出。
  16. We present a charge - transport model of the photorefractive effect with two deep traps ( two deep - trap model ) based on one deep - trap model and shallow - deep - trap model. we also found dark decay behaviors which accord with the two deep - trap model in the two - beam interference experiments. the fast decay - time constant of the space - charge field is obtained as 714s

    此外，在ce ： batio _ 3雙光束干涉光折變光柵的暗衰減實驗中，也觀察到了符合雙deep模型的衰減現象，得到光折變空間電場快衰減時間常數714s ，約12分鐘。
  17. The centre of the dark sector soliton evolution equation is derived by means of particle analytical method, equivalent form dark soliton ' s evolution equation in the photorefractive crystal, esceptialy between tow dark soliton ; the potential expression and it ' s numerically calculation is achieved, the conclusion is drawn : when the distance between two dark soliton = 0, its potential function has minimum, shows there is an stead soliton in the photorefractive maternal, and interaction between two dark soliton raches biggest ; when the distance between two dark soliton 5, its potential function is nearly equal zero, shows that the interaction between two lark soliton is very weak, nearly zero

    摘要本文從光折變晶體中能得出暗孤子所滿足的演化方程出發，用粒子分析力法得出了兩暗孤子相互作用時，其質心間的距離所滿足的演化方程，並得出了兩暗孤子相互作用勢函數的表達式，得到其數值解，並得出如下結論：當兩暗孤子間距離= 0時，其相互作用勢函數有最小值，表示在光折變晶體中有穩定的暗孤子對，並且相互作用達到最大；當兩暗孤子距離5時，其相互作用勢函數幾乎為零，表示兩暗孤子間相互作用很弱，幾乎為零。
  18. ( 1 ) effects of externally applied electric fields on photorefractive two - beam coupling are analyzed. theoretic dependence of the intensity gain factor on applied field e0 in sbn : 60 is presented. and the experimental results obtained in two sbn : 61 : cr crystal samples with different dopant concentration show clearly that for properly applied fields, a larger f can be achieved effectively than that obtained with no field applied

    由兩塊不同摻cr濃度的sbn 61 cr晶體得到的實驗結果同時表明，適當的外電場作用能夠有效提高晶體的二波耦合增益，並且，外電場的作用使晶體的響應速度大大提高，而晶體的最佳耦合角與外電場之間沒有明顯的依賴關系。
  19. Application of photorefractive polymer in electrooptics

    光折變聚合物材料在光電子技術中的應用
  20. Based on the band transport model, the formation of refractive index grating in photorefractive crystal is discussed firstly. then the characteristics of two - wave coupling, four - wave mixing and light - induced scattering are analyzed

    本文主要從實驗上研究了cu ： knsbn晶體的自泵浦相位共軛特性及cr ： sbn晶體的四波混頻相位共軛特性及其應用。
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