We describe a measurement method of refractive indices by way of spectrally resolved interferometry using a femtosecond pulse laser. The method is dispersion insensitive and requires no prior precise knowledge of the geometrical thickness of the specimen. Not only the group but also the phase refractive index can be determined over the wide spectral range covered by the optical comb of the femtosecond pulse laser in use.

© 2007 Optical Society of America

Full Article  |  PDF Article


  • View by:
  • |
  • |
  • |

  1. M. Born and E. Wolf, Principles of Optics, 7th ed. (Cambridge U. Press, 1999).
  2. K. Vedam, R. Rai, F. Lukes, and R. Srinivasan, J. Opt. Soc. Am. 58, 526 (1968).
  3. I. Ohlídal, K. Navrátil, and V. Holý, J. Opt. Soc. Am. A 5, 465 (1988).
  4. I. K. Ilez, R. W. Waynant, K. R. Byrnes, and J. J. Anders, Opt. Lett. 27, 1693 (2002).
  5. M. Haruna, M. Ohmi, T. Mitsuyama, H. Yajiri, H. Maruyama, and M. Hashimoto, Opt. Lett. 23, 966 (1998).
  6. G. J. Tearney, M. E. Brezinski, J. F. Southern, B. E. Bourna, M. R. Hee, and J. G. Fujimoto, Opt. Lett. 20, 2258 (1995).
    [Crossref] [PubMed]
  7. A. Hirai and H. Matsumoto, Opt. Lett. 28, 2112 (2003).
    [Crossref] [PubMed]
  8. D. F. Murphy and D. A. Flavin, Appl. Opt. 39, 4607 (2000).
  9. K.-N. Joo and S.-W. Kim, Opt. Express 14, 5954 (2006).
    [Crossref] [PubMed]

2006 (1)

2003 (1)

2002 (1)

2000 (1)

1998 (1)

1995 (1)

1988 (1)

1968 (1)

Anders, J. J.

Born, M.

M. Born and E. Wolf, Principles of Optics, 7th ed. (Cambridge U. Press, 1999).

Bourna, B. E.

Brezinski, M. E.

Byrnes, K. R.

Flavin, D. A.

Fujimoto, J. G.

Haruna, M.

Hashimoto, M.

Hee, M. R.

Hirai, A.

Holý, V.

Ilez, I. K.

Joo, K.-N.

Kim, S.-W.

Lukes, F.

Maruyama, H.

Matsumoto, H.

Mitsuyama, T.

Murphy, D. F.

Navrátil, K.

Ohlídal, I.

Ohmi, M.

Rai, R.

Southern, J. F.

Srinivasan, R.

Tearney, G. J.

Vedam, K.

Waynant, R. W.

Wolf, E.

M. Born and E. Wolf, Principles of Optics, 7th ed. (Cambridge U. Press, 1999).

Yajiri, H.

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.

Figures (3)

Fig. 1
Fig. 1

Three-step measurement of the geometrical thickness and refractive index of a specimen: (a) the first step for measuring d 1 = N a ( L 2 L 1 ) , (b) the second step for d 2 = N a ( L 3 L 2 ) and d 4 = N s t , and (c) the third step for d 3 = N a L 4 and d 4 = N s t . FS laser, femtosecond laser; OI, optical isolator; BS, beam splitter; FPE, Fabry–Perot etalon; M 1 and M 2 , mirrors; B, beam blocker; S, specimen.

Fig. 2
Fig. 2

Fourier-transformed signals of spectrally resolved interferences obtained from a BK7 specimen of 1 mm thickness: (a) signal of the first step, (b) the second step, and (c) the third step. N s t corresponds to d 4 in the text.

Fig. 3
Fig. 3

(a) Phase refractive indices (solid line) in comparison with their reference values (dashed line) obtained for BK7 and UV-fused silica specimens, and (b) the measurement error deviated from the reference values.