1. Forthcoming papers

   Announcement Pages: A5 - A5

2. Cw Ar⁺ laser-induced oxidation of Cu layers

   • R. Andrew

   Contributed Papers Pages: 205 - 212

3. Isotope selective ionization of tellurium dimers Te₂ formed by excimer laser photodissociation of an organometallic compound: CH₃TeTeCH₃

   • R. Larciprete
   • M. Stuke

   Contributed Papers Pages: 213 - 215

4. Characteristics of the loss modulation of intracavity Raman-Nath acousto-optic devices

   • M. Kemmler
   • J. Kluge
   • D. von der Linde

   Contributed Papers Pages: 217 - 223

5. Nonresonant tripling and sum-frequency mixing in Hg

   • R. Hilbig
   • G. Hilber
   • R. Wallenstein

   Contributed Papers Pages: 225 - 230

6. Optimization criteria for optical klystrons

   • R. Coïsson
   • G. Dattoli
   • A. Renieri

   Contributed Papers Pages: 231 - 234

7. Spectral and temporal investigations of nonlinearities in a non-polarization preserving single-mode optical fibre

   • A. S. L. Gomes
   • U. Österberg
   • J. R. Taylor

   Contributed Papers Pages: 235 - 240

8. A 3% efficiency N₂ laser

   • B. Oliveira dos Santos
   • C. E. Fellows
   • C. A. Massone

   Contributed Papers Pages: 241 - 244

9. A high-power transverse-flow cw CO₂ laser-output and small-signal gain measurements

   • J. Stańco
   • Z. Rozkwitalski
   • R. Zaremba

   Contributed Papers Pages: 245 - 250

10. Rotational energy transfer in I ₂ ^* (B ³ Π) colliding with I₂(X ¹ Σ), Ar and He: Experiment and fitting law

    • He Chun
    • Huang Ruiping
    • Zhang Cunhao

    Contributed Papers Pages: 251 - 257

11. Phase conjugation by reflection gratings in electrooptic crystals

    • N. V. Kukhtarev
    • T. I. Semenets
    • G. Tomberger

    Contributed Papers Pages: 259 - 263

12. Degenerate four-wave mixing in photorefractive Bi₁₂GeO₂₀ crystals involving internal reflections

    • Y. H. Ja

    Contributed Papers Pages: 265 - 269