Conditions under which light-pipes with highly reproducible transmittance are prepared are described. Preparation of borosilicate glass tubing by washing with HF and SiCl<sub>2</sub> solutions gave the best results. Electron microscopy showed that drawn capillary tubing had a much smoother bore than "precision-bore" (drilled) tubing, and light-pipes constructed from drawn tubing had a much higher transmittance. Annealing the tubes at 800°C appeared to cause the gold coating to be more tightly held to the glass tubing. Light-pipes which had been annealed at 800°C could have small holes drilled through the tube without the gold coating lifting.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription