Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi Journal of Electrical Engineering and Electronic TechnologyISSN: 2325-9833
Hemashilpa Kalagara Author
Subjects of specialization
Affiliation
Fault detection, Induction machine, Wavelet transform
Kalagara, Lumentum Operations LLC, USA
Biography
Hemashilpa Kalagara received her BE in Electronics and Instrumentation Engineering from the Birla Institute of Technology and Science-Goa, India, in 2008. She obtained her PhD in Electrical Engineering from the University of New Mexico in 2015. Currently, she is as a Laser Diode Chip Designer, doing research and development of highly innovative high power edge emitting (EE) lasers for industrial applications and vertical cavity surface emitting lasers (VCSELS) for 3D sensing applications.
Publications
Special Issue Article Open Access
High power, high brightness pumps for kW Fiber lasers
Author(s): Hemashilpa Kalagara
High power fiber lasers are used in laser material processing such as laser welding, cutting, drilling etc. for wide range of applications. Diode lasers are very cost effective and efficient pump sources for fiber lasers. They consist of arrays of diode lasers which generate hundreds of watts of power, that is are coupled into the fibers using alignment optics, all of which are assembled in a compact package. GaAs based broad area lasers at 980nm are used as the pumps. The key requirements for laser material processing applications are high power and low Beam parameter product (BPP). A typical broad area laser (BAL) has length of at least 5mm and width of 100um, generating 14W power at 15A and BPP of 3.77. Due to the large stripe width, the laser is multimode and the FF profile has nume... view more»
Google Scholars / Researchers Sites
