The goal of this study is to demonstrate how a DPSS laser beam's quality parameters can be simultaneously
optimized through pump current tuning. Two DPSS lasers of the same make and model were used where the laser
diode pump current was first varied to ascertain the lowest RMS noise region. The lowest noise was found to be
0.13% in this region and the best M<sup>2</sup> value of 1.0 and highest laser output power were simultaneously attained at the
same current point. The laser manufacturer reported a M<sup>2</sup> value of 1.3 and RMS noise value of .14% for these
lasers. This study therefore demonstrates that pump current tuning a DPSS laser can simultaneously optimize RMS
Noise, Power and M<sup>2</sup> values. Future studies will strive to broaden the scope of the beam quality parameters impacted
by current tuning.
This paper describes a high-speed communication link that serializes and transmits 40-bit-wide data over fiber at rates of up to 800 Megabits per second (Mbps). The medium can be either 50/125 (mu) or 62.5/125 (mu) fiber. The compact card containing hot rod and CD laser-based fiber optics can be used for serial links of up to 300 m at 800 Mbps, 1 km at 400 Mbps, and 2 km at 200 Mbps. The applications include high-speed networks and point-to-point communication.