ACKNOWLEDGEMENTS

To Dr. Digant Dave, thank you for giving me the opportunity to work on such an exciting project. Your guidance helped me to obtain a sound understanding of optics. I am grateful, for this appreciation and understanding. To Dr. Shashank Priya and Dr. Liping Tang, thank you for your support, guidance and advice during my research and graduate studies. Thank you. To my dad and mom, thank you for all your support and inspiration throughout my life. You always encouraged me to follow my dreams. To my sisters Bipasha and Barsha without whose enthusiasms and love none of this would have been possible. My special thanks to Ms. Nidhi and Mr. Manish for their indispensable technical assistance. I take this opportunity to thank all the members of Dr. Dave’s group for their cooperation as and when required