Hindustan University


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Centre of Excellence in Photonics and LIDAR Research (CEPLR) was established in 2011, in collaboration with Indian Institute of Science (IISc), Bangalore, under the Black Carbon Research Initiative (BCRI) of Govt. of India. CEPLR studies enabled Hindustan University to become one of the Associated Institutions in the list identified by the Ministry of Environment and Forests (MoEF), Ministry of Earth Sciences (MoES), Ministry of Science and Technology and Indian Space Research Organization (ISRO) through the National Carbonaceous Aerosol Program (NCAP) devised under the aegis of the Indian Network of Climate Change assessment (INCCA).

Prof. Dr. S. K. Satheesh, CAOS, IISc, Bangalore delivering a lecture at NationalWorkshop on "LIDAR and its Applications in Climate Change, Atmospheric Science and Free Space Optical Communication"

We carry out investigations on atmospheric aerosols especially, the elementary carbon or black carbon in the atmosphere. A 532nm operated Micro pulse LIDAR, a seven channel Aethalometer and a DUSTRAK equipment (for aerosol mass concentration measurement) are have been installed in the Lab. Investigations carried out using these equipments are capable of providing valuable information for Climate Studies, Optical Remote Sensing, Atmospheric Correction, etc.

The research and development activities at the Laboratory are encompassed under the following primary mission areas:
• Long term monitoring of atmospheric aerosols
• Extraction of various atmospheric aerosol characteristics • Research on FSO
• Estimating the magnitude of aerosols in the atmosphere

A National Technical Seminar has been conducted by the Centre of Excellence in Photonics and LIDAR Research (CEPLR) and Department of Electronics and Communication Engineering on ""Atmospheric Science: Implication to Climate Change and Optical Communication" during 22nd April 2015.

Dr. S. K. Satheesh, Professor Centre for Atmospheric and Oceanic Sciences (CAOS) delivered a talk. His valuable and informative talk gave an insight into the operation and application of Light Detection and Ranging (LIDAR) instrument. Free Space Optical Communication is a solution to the last mile problem in high capacity optical networks which are capable of carrying enormous volume of data in back born connectivity. The application of FSO & effect of various atmospheric particles on propagation of optical radiation through the random media were the main focus in his talk.

Dr. S. K. Sudheer, Assistant Professor, Department of optoelectronics, School of Technology, University of Kerala delivered highly informative talk on "Lasers: Fundamentals, Technology and Applications". The FSO links utilizes Laser radiation to carry the high volume of data through the atmosphere and the fundamentals of LASER generation and its various propagation characteristics were the focus on his talk. The various interesting applications of LASERs in modern technology / Industry, including Free Space Optical Communication were highly informative to the attendees.

National Workshop on "Atmospheric Science: Implication to Climate Change and Optical Communication"

1. Micropulse LIDAR: The MicropulseLidar (MPL) is a ground-based optical remote sensing system designed primarily to determine the altitude of clouds overhead. The physical principle is the same as for radar. Pulses of energy are transmitted into the atmosphere; the energy scattered back to the transceiver is collected and measured as a time-resolved signal. 2. Aethalometer: The instrument uses optical analysis to determine the mass concentration of Black Carbon (BC) particles collected from an air stream passing through a filter. 3. DustTrak: The DustTrak Aerosol Monitor is a handheld battery-operated, data-logging, light-scattering laser photometer that gives the real-time aerosol mass readings


The Aethalometer is an instrument that provides a real-time readout of the concentration of 'Black' or 'Elemental' carbon aerosol particles ('BC' or 'EC') in an air stream. These particles ("soot") are emitted from all types of combustion, most notably from diesel exhaust. The Aethalometer performs the optical analysis and data readout 'on the spot'. The results are available immediately to the user, without waiting for analysis of a sample at a laboratory. The Aethalometer is a self-contained, automatic instrument. It requires no consumable materials, no gas cylinders, no operator attention. It runs automatically: plug it in, walk away. It requires no calibration other than periodic checks of the air flow meter response.

Dust Trak DRX Aerosol Monitor

Real-time dust monitoring takes a giant leap forward. Only the DUSTTRAK™ RX Aerosol Monitor 8533 can simultaneously measure both mass and size fraction. The DUSTTRAK DRX desktop monitor is a battery operated, data-logging, light-scattering laser photometers that gives you real-time aerosol mass readings. It uses a sheath air system that isolates the aerosol in the optics chamber to keep the optics clean for improved reliability and low maintenance.

Few Points:
 Mr. V. R. Sreeraj, M.Tech Communication systems - joined IISc, Bangalore as summer fellow, Jan-May 2013  National Workshop on "LIDAR and its Applications in Climate Change, Atmospheric Science and Free Space Optical Communication -18th March 2013  National Technical Seminar '' Atmospheric Aerosols-Implication to Climate change and Optical Communication", 22nd April 2015  Experimental investigation on FSO under controlled lab environment.

Academic Partner: http://caos.iisc.ernet.in/

Mr. Sunil Kumar - Centre Head
Centre of Excellence in Photonics and Lidar Research (CEPLR)
Hindustan Institute of Technology & Science (HITS)
Email: sunilk@hindustanuniv.ac.in