Optical Spectroscopy of Low Dimensional Semiconductors 87 the cooperation with trade and 9783642096402 the cooperation with trade and industry The material presented here may serve as a portion of an introductory course or seminar on visibility based optimal path and motion planning problems with the objective of stimulating interest and further studies in this relatively new area Optical spectroscopy has played and is playing a crucial role in the advancement of this fascinating field of semiconductor physics Technological advances in semiconductor growth has opened a broad horizon for semiconductor physics and applications during the past 20 years