ROCKY MOUNTAIN SECTION OPTICAL SOCIETY OF AMERICA
                              &
           IEEE LASERS AND ELECTROOPTICS SOCIETY


                        April Meeting

Date:  Thursday, 20 Apr. 2000
Time:  7:00 PM refreshments, 7:30 PM talk
Place: National Institute of Standards and Technology
       325 Broadway, Boulder, CO
       Room 1107


Title: Yb/Er-codoped and Yb-doped Waveguide Lasers in 
Phosphate Glass


       Dr. David L. Veasey
       National Institute of Standards & Technology
       Optoelectronics Division
       Boulder, CO 



Abstract:

Experimental and theoretical results of recent work at NIST 
on the development of waveguide lasers using rare-earth-doped 
phosphate glasses will be presented.  An improvement has been 
achieved over previously reported waveguide laser results 
using the process of ion exchange in a commercially available 
Yb/Er-co-doped phosphate glass composition.  We have 
demonstrated slope efficiencies near 30 percent with output 
powers approaching 200 mW for 1540 nm Fabry-Perot waveguide 
lasers.  These lasers are continuously tunable over 
approximately 70 nm.  We have also realized arrays of single-
frequency distributed-Bragg-reflector waveguide lasers 
operating on the ITU grid by etching a gratings in ion-
exchanged waveguides.


Biography:

N/A