AdvR, Inc. proposes the development of a highly efficient, fiber pigtailed, waveguide-based UV frequency converter module. This UV module will be an important element in future NASA sponsored Doppler lidar and High Spectral Resolution Lidar (HSRL) aerosol missions. The key innovation is the use of dual-element periodically poled waveguides embedded in a nonlinear optical substrate. This innovation results in a vast improvement in the measurement capabilities of lidar systems by enabling the use of a single stabilized laser to both operate a high power transmitter and generate low power frequency tripled light for synchronous calibration and frequency locking of the Fabry Perot filter on the lidar receiver. To be used in a space-based system, the UV module must be rugged and must perform optimally in a radiation environment over the mission lifetime. To achieve this goal, the proposed dual-element structure will be packaged in a compact, robust fiber-pigtailed package which will readily lend itself to future space qualification for mechanical stability of the package and radiation damage resistance of the non-linear optical material.