16 1, 2011 548.0:534:535.4 . . , . . , . . , , . , , , - . . PACS: 41.20.-q : , , , , , . . — - , - , , - [1, 2]. , . . . ( , - . ) [3—5]. - . , . . , , , " [6]. " - , . , " " - , , . , . . . . ( ). , 141195, ., . , . . 785-56-39-14-55. E-mail: vmk277@ire216.msk.su . ., . ., 2010 . . ., 2011 , 1. . 1, . - , 2. OX OZ. ( 1 2) . 1 k1 k1 . 2 k2 . , 25 , - q. k1 k2 — T2o. . T1 T2o, , k2 . OZ T1 , k2o 1 2. k1 17 1, 2011 Z n0, ne — q q k1e k2e k1o k2o — T1 T2o ; ; 2 G33 — ( ) kp . . 1 2 He—Ne- , : = 0,63 10-4 2 -5 ne = 2,41; G33 = 2,62 10 . k k 2. n1 (2), (+). q ; — — " " , R1 [6] (1) n0V / fL , Q1 z04 1 ; 2 G33 n04 P1 2 z02 ; kp ( arctg kp ; . - , . - 2. (1)—(6) [7] 2 n1,2 1 tg 2 tg 2 2 1 n02 1 ne2 1 tg 4 2 1 n02 1 ne2 1 1 z02 n02 ne2 n02 z0 T2o T1 n1 cos 1 . (5) 2. - , f— L— (4) 0. 1; n02 — ); 1 n02 P1nx2 Q1 2 n0ne , V , 2. - . R1nx4 . - . n0 — –1 (3) (nx1 nx 2 ), nx1 nx2 — , ao 2 n1 = : . 1, ao 2 q . 1. — , n0 = 2,26; , , 2 arctg .2 T2o T1 , = n0 kp ( 1), , " , V = 0,617 105 2 L = 0,6 , , . . ao nx1 . z0 ( " " - . " 2), ( ). (1) .2 5 , . (6) f. " ao 2 4G33 (2) nx 2 z0 " - 18 1, 2011 . , 2,5 — - 6. 40—80 3 . 7 : 9, 10 2 8 - , 1,5 . 3 zk, " — z k. , 1 0,5 " , 3 0 3 4 5 6 7 8 9 . 2. " " 2. [8] ao " zk . zk 1 f 2 (7) zk z k, 2, - . . 3. = 0,63 10-4 1 He—Ne- , , 2 . - 3, , 4 , . . zk = 0,8 " . . 58 , . 2 3 4 F 1 5 F 4 9 . = 1,5 ( ~7,17 . . 6 . (7) 7) . 2). 1, D, - , / 1, — D 5,03 10-4 7 , 9 10 " . , 5, 5 10-4 " , . . " " 5. 2, [110], [1 10] [001] , {110} , " " . - 1 D . 3. " , . . z k = 18,3 10 D, 8 zk . ~ 21 f, , . zk - 3 3,5 - (7). 1 . F = 2,7 - 1 10 11 12 13 f, 107 - 10 10 10 . LiNbO3, - 1. D. , , , - . 2. . - 19 1, 2011 , , 1. 2. , . ( 09-02-12396- ., 09-07-00047, ) 3. .// . 1732. 4. 5. 6. -3317.2010.9. 7. 8. . . . — .: , 1986. . . , 1983. . ., . . .— . .: ., . 1976. . 19. . ., . ., . .// . 1981. . 8. 4. . 865. . ., . ., . .// . 1990. . 68. 6. . 1381. . ., . ., . . . — .: , 1985. . .// . 1995. . 37. . 1. . 261. . ., . . . — .: , 1986. Measurement of the scattering angle of the optical radiation by means of the Bragg diffraction V. M. Kotov, G. N. Shkerdin, E. V. Kotov Branch of the Institute of Radio Engineering and Electronics, 1 Vvedensky sq., Fryazino, Moscow region, 141195, Russia E-mail: vmk277@ire216.msk.su Proposed is a method of the measurement of the scattering angle of the optical radiation. It is based on the using of two Bragg diffraction processes occurred in the crystal at different incident angles respect to the acoustic wave. In the limited case, when two diffraction orders are observed simultaneously, which disappeared at small angular tuning out, the angular distance between the first diffraction orders is equal to the angle of the divergence of the incident light. The method is applied for the measurement of the sizes of the heterogeneities of the lapped glass wafer. PACS: 41.20.-q Keywords: angle, scattering, diffraction, divergence, measurement, heterogeneity. Bibliography — 8 references. Received September 25, 2010 . . 11. . -