1. Electronics Science and Technology Division, United States Naval Research Laboratory, Washington, DC 20375, United States
2. NRC Postdoc Residing at the Materials Science and Technology Division, United States Naval Research Laboratory, Washington, DC 20375, United States
3. Materials Science and Technology Division, United States Naval Research Laboratory, Washington, DC 20375, United States
4. NRC Postdoc Residing at the Electronics Science and Technology Division, United States Naval Research Laboratory, Washington, DC 20375, United States
5. Optical Sciences Division, United States Naval Research Laboratory, Washington, DC 20375, United States
6. Department of Physics and Astronomy and the Quantum Materials Center, George Mason University, Fairfax, Virginia 22030, United States