1. Spectral broadening of picosecond laser pulses in optical fibres

   • P. Weidner
   • A. Penzkofer

   Papers Pages: 1 - 25

2. Feedback relationships and threshold current in semiconductor injection lasers: old problems revisited

   • Fedor Šrobár

   Papers Pages: 27 - 35

3. An exact numerical analysis of coupled planar electron waveguides with asymmetric rectangular potential profiles

   • R. L. Ferrari
   • J. E. Carroll

   Papers Pages: 37 - 55

4. A simple variational analysis of diffused channel waveguides

   • Ning Hua Zhu
   • Ren Ming Wang

   Papers Pages: 57 - 62

5. Coherent photon seeding in a colour-centre laser

   • Yu. A. Rzhanov
   • J. V. Moloney

   Papers Pages: 63 - 74

6. Book reviews

   • Rodney Loudon
   • John E. Midwinter

   BookReview Pages: 75 - 77

7. Announcement

   Announcement Pages: 78 - 78