1. Forthcoming papers

   Announcement Pages: A5 - A6

2. Hard coatings for optically bistable interference filters

   • G. Ankerhold
   • F. Mitschke
   • W. Lange

   Contributed Papers Pages: 101 - 104

3. Computer controlled diode laser spectrometer with a helium evaporation cryostat and spectroscopy of thev ₃ vibration of NCO

   • R. Brüggemann
   • M. Petri
   • W. Urban

   Contributed Papers Pages: 105 - 110

4. Laser emission from the organic free radical 9-julolidylthiyl in solution

   • S. Ishizaka

   Contributed Papers Pages: 111 - 113

5. Intense ultrashort pulse generation in a two-photon pumped generator-amplifier system

   • P. Qiu
   • A. Penzkofer

   Contributed Papers Pages: 115 - 124

6. Generation of nearly diffraction-free laser beams

   • K. Uehara
   • H. Kikuchi

   Contributed Papers Pages: 125 - 129

7. Theoretical analysis of acoustic-optic frequency shifter by dual mode fiber

   • Chen Yijiang

   Contributed Papers Pages: 131 - 137

8. Time-resolved measurements of picosecond optical breakdown

   • B. Zysset
   • J. G. Fujimoto
   • T. F. Deutsch

   Contributed Papers Pages: 139 - 147

9. Pulse formation in synchronously pumped infrared dye lasers

   • U. Stamm
   • F. Weidner

   Contributed Papers Pages: 149 - 153

10. Application of a pulsed laser for soot measurements in premixed flames

    • P. -E. Bengtsson
    • M. Aldén

    Contributed Papers Pages: 155 - 164

11. A Ca optical frequency standard: Frequency stabilization by means of nonlinear Ramsey resonances

    • A. Morinaga
    • F. Riehle
    • J. Helmcke

    Contributed Papers Pages: 165 - 171

12. Multiple relaxation and inhomogeneous broadening in resonance enhanced Raman scattering: Application to tunable infrared generation

    • J. C. Ryan
    • N. M. Lawandy

    Contributed Papers Pages: 173 - 182

13. Ultraweak emission imagery of mitosing soybeans

    • R. Q. Scott
    • M. Usa
    • H. Inaba

    Contributed Papers Pages: 183 - 185