Abstract

We describe the fabrication of optical waveguides in LiTaO3 using proton exchange in hot benzoic acid. All specimens analyzed were X cut. An increase in surface extraordinary index of ~0.14 has been observed for samples exchanged for 3 h at a melt temperature of 249°C. No change was observed in the ordinary index. Waveguide fabrication was facilitated by further baking the samples for an extended period of time at a temperature hotter than the acid melt. The latter technique also served to minimize the surface damage that is characteristic of acid baths exceeding roughly 4 h. The depth of proton exchange in X-cut LiTaO3 appears to be considerably less than would be the case for X-cut LiNbO3 under the same conditions.

© 1983 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. L. Jacket et al., Appl. Phys. Lett. 41, 607 (1982).
    [CrossRef]
  2. K. K. Wong et al., Opt. Lett. 7, 546 (1982).
    [CrossRef] [PubMed]
  3. M. de Micheli et al., Opt. Lett. 8, 114 (1983).
    [CrossRef] [PubMed]
  4. J. L. Jackel, C. E. Rice, Appl. Phys. Lett. 41, 508 (1982).
    [CrossRef]
  5. A. Yi-Yan, Appl. Phys. Lett. 42, 633 (1983).
    [CrossRef]

1983 (2)

1982 (3)

J. L. Jackel, C. E. Rice, Appl. Phys. Lett. 41, 508 (1982).
[CrossRef]

J. L. Jacket et al., Appl. Phys. Lett. 41, 607 (1982).
[CrossRef]

K. K. Wong et al., Opt. Lett. 7, 546 (1982).
[CrossRef] [PubMed]

de Micheli, M.

Jackel, J. L.

J. L. Jackel, C. E. Rice, Appl. Phys. Lett. 41, 508 (1982).
[CrossRef]

Jacket, J. L.

J. L. Jacket et al., Appl. Phys. Lett. 41, 607 (1982).
[CrossRef]

Rice, C. E.

J. L. Jackel, C. E. Rice, Appl. Phys. Lett. 41, 508 (1982).
[CrossRef]

Wong, K. K.

Yi-Yan, A.

A. Yi-Yan, Appl. Phys. Lett. 42, 633 (1983).
[CrossRef]

Appl. Phys. Lett. (3)

J. L. Jacket et al., Appl. Phys. Lett. 41, 607 (1982).
[CrossRef]

J. L. Jackel, C. E. Rice, Appl. Phys. Lett. 41, 508 (1982).
[CrossRef]

A. Yi-Yan, Appl. Phys. Lett. 42, 633 (1983).
[CrossRef]

Opt. Lett. (2)

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

Comparative absorption spectra of LiTaO3 and LiNbO3. (a) Sample of each compound after being subjected to a benzoic acid bath of 3 h. (b) Results of an acid bath of 7 h. In each case the acid temperature was 249°C.

Fig. 2
Fig. 2

Cross section of stripe waveguides in LiTaO3. (a) Results of 2-h acid bath at 249°C followed by annealing for 18 h at 250°C. Only the TE modes are guided. (b) Input light polarization rotated by 90° results in extinction of guided modes. Photographed at 800× magnification in each case.

Fig. 3
Fig. 3

Cross section of strip waveguide in LiTaO3 after continued annealing for 17 h at 325°C. (A) Support of TE mode is seen. (b) Extinction of the TM mode is demonstrated. Photographed at 800× magnification in each case.

Metrics