Vinaya Kumar Kavatamane

TL;DR: A tapered optical fiber (TOF) tip is used to significantly improve the efficiency of the laser excitation and fluorescence collection of the NV ensembles in diamond, which could potentially enhance the sensitivity and spatial resolution of theNV-based endoscope-type sensor.

TL;DR: In this paper, a micro-concave mirror is used to focus scattered excitation laser light into the diamond located at the focal point of the mirror, which couples the fluorescence light exiting out of the diamond crystal in the opposite direction of the optical fibre back into the optical fiber within its light acceptance cone.

TL;DR: In this paper, a simple and robust optical fiber based method was proposed to achieve simultaneously efficient excitation and fluorescence collection from Nitrogen-Vacancy (NV) defects containing micro-crystalline diamond.

TL;DR: In this article, a tapered optical fiber (TOF) tip was used to improve the efficiency of the laser excitation and fluorescence collection of the nitrogen-vacancy (NV) centers in diamond and collect their fluorescence significantly benefit the fiber-optic-based NV sensors.

TL;DR: In this article, the authors investigated the heat generation of ensemble nitrogen-vacancy (NV) centers in micrometer-sized diamond under 532nm laser irradiation and its effects pertaining to sensing applications.