1. Optimized preamplifiers for pyroelectric detectors

   • Jochen Jirmann

   OriginalPaper Pages: 1091 - 1101

2. A fast algorithm for DC design of millimeter wave impatts

   • S. Ahmad

   OriginalPaper Pages: 1103 - 1120

3. A heterodyne receiver for the submillimeter wavelength region based on cyclotron resonance in InSb at low temperatures

   • Elliott R. Brown
   • Jocelyn Keene
   • T. G. Phillips

   OriginalPaper Pages: 1121 - 1138

4. Millimeter wave spectrophotometry by the Ledatron

   • Shozo Suto
   • Mikihiko Ikezawa
   • Koji Mizuno

   OriginalPaper Pages: 1139 - 1146

5. Tunneling energy levels of an off-center impurity of the hydroxyl ion in NaCl crystal

   • T. Nanba
   • S. Suto
   • M. Ikezawa

   OriginalPaper Pages: 1147 - 1155

6. New far infrared laser lines obtained by optically pumping¹³CD₃OD

   • E. C. C. Vasconcellos
   • K. M. Evenson

   OriginalPaper Pages: 1157 - 1167