An International Research Journal

AJP

SSN : 0971 - 3093

Vol  15, Nos. 3&4, July-December, 2006

Asian Journal of Physics                                                                                                        Vol. 15, No 3 (2006) 199-202


Stokes Interferometry- First Experimental Results


 Vladimir G Denisenkoa ,Vladimir V Slyusara, Marat S Soskina and Isaac Freundb
aInstitute of Physics, National Academy of Science of Ukraine, 46 Prospekt Nauki, Kiev-39, 03650, Ukraine

 bDepartment of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel

___________________________________________________________________________________________________________________________________

First experimental results are presented for a new form of interferometry based on the use of crosspolarised sample and reference beams and a measurement of the Stokes parameters of the combined beam. This new method is used to obtain a high resolution phase map of a Gaussian laser beam containing an on-axis optical vortex. These initial experimental results are compared with the standard forked fringe interferometric method for measuring optical vortices, and with the theoretical phase map. Excellent agreement is found in all cases, thereby verifying the accuracy of the method. and paving the way for its use in the study of random speckle patterns, as well as in metrologic and other applications.© Anita Publications. All rights reserved.

___________________________________________________________________________________________________________________________________

References

 1  Sirohi, RS, Contentp Phys, 43 (2002) 161.

 2  Fresnel, A, Chim et Phys, 1 (1816) 239.

 3  Freund, I, Opt Lett, 26 (2001) 1996.

 4  Born, W, and Wolf, E, Principles of Optics. (Pergamon Press, Oxford, England), 1959, pp. 550-552.

 5  Soskin, MS, Vasnetsov, MV, in Wolf, E (Ed), Progress in Optics, 42 (Elsevier, Amsterdam), 2001, pp 219-276.

 6  Nye, JF, Berry. MV, Proc Roy Soc Lond A, 336 (1974) 165.

 7  Bazhenov, VYu, Vasnetsov, MV, Soskin, MS. JETP Lett 52 (1990) 429.

 8  Oka, K, Kaneko. T, Opt Express, 11 (2003) 1510.

 9  Freund, 1, Soskin, MS. Mokhum, AI, Opt Commit, 208 (2002) 223.

10 Soskin, MS. Denisenko, V, Freund. I, Opt Lett. 28 (2003) 1475.


Asian Journal of Physics                                                                                                       Vol. 15, No. 3 (2006) 203-209

Seidel coefficients in optical testing


1Virendra N. Mahajan*, and 2William H. Swantner,
1The Aerospace Corporation, El Segundo, CA 90245, USA
2Optical Engineering Services, 433 Live Oak Loop NE, Albuquerque NM 87122, USA

___________________________________________________________________________________________________________________________________

Determination of the Seidel aberration coefficients from Zernike aberration coefficients obtained in optical testing is discussed, and potential pitfalls in the determination process are explained. © Anita Publications. All rights reserved.

Total Refs :12

___________________________________________________________________________________________________________________________________

 

Asian Journal of Physics                                                                                                       Vol 15, No. 3, (2006) 211-222


A k-space analysis of holographic particle image velocimetry


J M Coupland, N A Halliwell, R D Alcock and C P Garner
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University,
Ashby Road, Lougborough, Leics. LEI I 3TU

___________________________________________________________________________________________________________________________________

This paper introduces a new three-dimensional, k-space formulation of scalar wave propagation and describes its use in the analysis of Holographic Particle Image Velocimetry (HPIV). In particular, it is shown that the three-dimensional autocorrelation of scattered fields can be calculated from measurements of the power in the propagating plane wave components. In addition it is shown that this method, which we refer to as Complex Correlation Analysis, is tolerant to phase aberrations introduced by windows or distortions introduced by the holographic recording process. A similar approach is used to analyse the Object Conjugate Reconstruction (OCR) technique to resolve directional ambiguity by introducing an artificial image shift to the reconstructed particle images. An example of how these methods are used together to measure the instantaneous flow fields within a motored Diesel engine is then described. Anita Publications. All rights reserved.

Total Refs: 12

___________________________________________________________________________________________________________________________________


Asian Journal of Physics                                                                                                       Vol 15, No. 3, (2006) 223-231

 

Adaptive reconfigurable optical interconnects


T D Wilkinson, D Gil-Leyva and C Henderson
Cambridge University, Department of Engineering.
Trumpington St, Cambridge CB2 I PZ

___________________________________________________________________________________________________________________________________

The next generation of applications for liquid crystal over silicon technolgy will be non-display oriented systems such as adaptive optical interconnects, optical switches and optical image processors. We have been developing these new applications both as reconfigurable optical interconnects (or switches) and adaptive optical interconnects. There is a growing need for optically transparent interconnects in both telecommunications networks as well as board to board and chip to chip systems and reconfigurable phase gratings or holograms offer a very exciting solution. Free space optical data transmission is becoming more and more important as the data rate in electronic systems increases into the GHz 7egion in order to avoid data bottlenecks. Past research into free-space optical links has shown that a high level of manufacturing tolerance must be used to maintain the link, however, one way of avoiding these limitation is to use a reconfigurable liquid crystal phase hologram as a beam steering element to compensate for movement between the boards and maintain the optical data path. In this paper we present recent results in utilising phase holograms to steer 5.-ee space optical beams in both a telecommunications switch and a board to board interconnect. © Anita Publications. All rights reserved.

Total Refs: 14

___________________________________________________________________________________________________________________________________


Asian Journal of Physics                                                                                                       Vol 15, No. 3, (2006) 233-242

 

Production and applications of single crystal optical fibres


J H Sharp1, C W P Shi1, I A Watson1 and H C Seat2
1Laser & Optical Systems Engineering Centre, Department of Mechanical Engineering
University of Glasgow, Glasgow G I 2 8QQ, UK
2Laboratoire d 'Electronique, ENS'EEII-IT-LEN7,
2 rue Charles Camichel, BP 7122-31071, Toulouse Cedex 7, France

___________________________________________________________________________________________________________________________________

Single-crystal fibres combine the material benefits of optical crystals with a waveguiding device geometry. As such they offer potentially significant advantages over conventional optical fibres in some specific fields. However, research in this area has been slow to gather momentum and to fully realise this potential. This paper reviews production methods of single-crystal fibres along with the applications which have been addressed to date along with future application areas. In addition, specific reference is made to the recent work carried out by the authors.

___________________________________________________________________________________________________________________________________

References

1. Boys CV, Nature, 40 (1889) 247.

2. Boys CV, Proc Phys Soc, 9 (1887) 8.

3. Burrus CA, Stone J, Appl Phys Lett, 26 (1975) 318.

4. Stone J, Burrus CA, Fiber and Integ Opt, 2 (1979) 19.

5. Tatarchenko VA, J Crystal Growth, 37 (1977) 272.

6. LaBelle HE, Mat Res Bull, 6 (1971) 581.

7. Mimura Y, Okamura Y, Komazawa Y, Ota C, Jap J Appl Phys, 19 (1980) L269.

8. Bridges TJ, Opt Lett, 5 (1980) 85.

9. J Crystal Growth, 50(1) (1980) special issue on shaped crystal growth.

10. Vidakovic V, Coquillay M, Salin F, J Opt Soc Am B, 4 (1987) 998.

11. Ballentyne G, AI-Shukri SM, J Crystal Growth, 48 (1980) 491.

12. Kurlov VN, Kiiko VM, Koichin AA, Mileiko ST, J Crystal Growth, 204 (1999) 499.

13. Turk, Proc SPIE 320, Advances in Infrared Fibres II, (1982) 93.

14. DeShazer, OSA Annual Meeting, Washinton D C (1985), paper WB2.

15. Laser Focus World, 27 (June 1991) 139.

16. Ohnishi N, Yao T, Jap J Appl Phys, 28 (1989) L278.

17. Oguri H, Yamamura H, Orito T, J Crystal Growth, 110 (1991) 669.

18. Fejer MM, Magel GA, Nightingale JL, Byer RL, Rev Sci Instr,55 (Nov 1984) 1791.

19. Magel GA, Jundt DH, Fejer MM , Byer RL, SPEI 618 IR Optical Materials and Fibres,IV (1986) 89.

20. Feigelson RS, Materials Sci and Eng, B1 (1988) 67.

21. Nightingale JL, The growth and optical applications of single-crystal fibres, Ph D thesis, Stanford University, (Sep 1986).

22. Andrauskas DM, Thomas LM, Verdun HR, SPIE 1104 Growth, Characterisation and Applications of Laser Host and Non-linear Crystals,(1989) 120.

23. Burrus CA, Stone J, Dentai AG, Electronics Lett, 12(1976) 600.

24. Merberg GN, Harrington JA, Appl Opt, 32 (1993) 3201.

25. Que WX, Zhou Y, Lam YL, Chan YC, Kam CH, Huo YJ, Zhang LY , Yao X, J Modern Opt, 47 (2000) 1127.

26. Renwick EK, MacDonald MP, Ruddock IS, Opt Commun, 151(1998) 75.

27. Saini DPS, Shimoji Y, Chang RSF, Djeu N, Opt Lett, 16(1991) 1074.

28. Sharp JH, Illingworth R, Ruddock IS, Opt Lett, 230998) 109.

29. Lo CY, Huang P L, Chou TS, Lee L M, Chang T Y, Huang S L, Lin L C, Lin H Y, Ho FC, Jap JAppl Phys, Pt. 2, 41 (2002) L1228.

30. de Camargo ASS, Nunes LAO, Ardila DR, Andreeta JP, Opt Lett, 29 (2004) 59

31. Stone J, Burrus CA, JAppl Phys, 49 (1978) 2281.

32. Seat HC, Sharp JH, Meas Sci Tech, 14 (2003) 279.

33. van den Hoven GN, et al, J Appl Phys, 79 (1996) 1258.

34. Tissue BM, et al, J Crystal Growth, 109 (1991) 323.

35. Vicente FS, et al, Rad Eff Defects Sol 147 (1998) 77.

36. Brenier A, Chem Phys Lett, 290 (1998) 329.

37. Tong LM, Shen YH, Ye LH, Sensors and Actuators, 75 (1999) 35.

38. Wang A, Gollapudi S, May RG, Murphy KA, Claus RO, Smart Mat & Struct, 4 (1995) 147.

39. Xiao H, Zhao W, Lockhart R, Wan J, Wang A, Proc SPIE, 3201 (1998) 36.

40. Seat HC, Sharp JH, Zhang ZY, Grattan KTV, Sensors and Actuators A,101 (2002) 24.

41. Scat HC, Sharp JH, IEEE Mans Instrum Meas, 53(2004) 140.

42. Henry DM, Herringer JH, Djeu N, Appl Phys Lett, 74(1999) 3447.

43. Sharp JH, Shi CWP, Seat HC, Measurement & Control, 34 (2001) 170.

44. Johnson DC, Bilodeau F, Malo B, Hill KO, Wigley PGJ, Stegeman GI, Opt Lett, 17(1992) 1635.

45. Davis DD, Gaylord TK, Glytsis EN, Kkosinski SG, Mettler SC, Vengsarkar AM, Electron Lett, 34 (1998) 302.

46. Fuijimaki M, Ohki Y, Brebner JL, Roorda S, Opt Lett, 25 (2000) 88.

47. Hwang I, Yun S, Kim BY, Opt Leo, 24 (1999) 1263.

48. McHam ML, Eisenberg DL, Schuman JS, Wang N, Ophth Surg Lasers, 28 (1997) 55.

49. Lou JY, Tong LM, Xu YF, J Infrared & Millimeter Waves, 21(2002) 397.

© ANITA PUBLICATIONS

All rights reserved