DRDO - ADA EXHIBITION

Air Force Station Yelahanka, Bengaluru

20th (Wed) - 24th(Sun), February 2019

Laser Science & Technology Centre

LASTEC


About Lab

Laser Science & Technology Centre (LASTEC), Delhi has its origin as Defence Science Laboratory(DSL) established as a nucleus laboratory of DRDO in 1952. In the begining DSL operated from National Physical Laboratory (NPL) building. Later in 1960, it was shifted to Metcalfe House. In 1982, the DSL moved to its new technical building in Metcalfe House complex and was renamed as Defence Science Centre (DScC) and given a new charter of duties with its major thrust on lasers. In 1999, in view of the R&D thrust shifting to development of Lasers and Optoelectronics systems & related technologies, the laboratory was rechristened as LASTEC. With time, many of DSL activities were given to as many as 15, specialised DRDO laboratories.

Vision of LASTEC is to be a Centre of Excellence in Lasers & their Defence applications. Present thrust areas of LASTEC are Development of critical technologies related to development of High Power CW and Pulsed laser sources with desired power levels and beam quality for DEW applications, Laser warning Countermeasures and Non Lethal weapons, Laser spectroscopy for detection and identification of Biological and Chemical Warfare agents and Explosive materials.

LASTEC being premier laboratory of ECS cluster , is working on the development of laser based equipment for wide spectrum of applications like Safe Ammunition Disposal, Optical Dazzling, Optical Target Locator and Laser Fence integrated with Multilayer Intrusion Detection system..

LASTEC is ISO 9001: 2015 certified laboratory harnessing state of the art technologies and Quality Assurance Processes.

LASTEC is strictly contributing in the Swachh Bharat mission of Government of India. Dedicated offorts in promoting Rajbhasha in the laboratory, resulted in LASTEC getting highest recognition from NARAKAS (Nagar Rajbhasha Karyanvayan Samiti) for carrying out ÚTKRASHT’ work in Hindi.

Shri Hari Babu Srivastava

Shri Hari Babu Srivastava took over as Director of Laser Science and Technology Centre, Delhi on 20th June 2014. At this Centre, he has been spearheading research and development in various laser technologies ranging from high power laser sources to chemical/biological LIDARs, explosive identification, laser countermeasures, electro-optical/laser equipment and various other innovative laser applications for use of Armed Forces, Paramilitary and Police forces.

He joined DRDO in 1984 at Instruments Research and Development Establishment (IRDE), Dehra Dun, after a brief stint (1983-84) in industry at M/S Hindustan Instruments Ltd., New Delhi. At IRDE, he specialized in electro-optical fire control and surveillance technologies – designing, developing and integrating a number of products for surveillance and fire control applications for various military platforms like Arjun Mk I and Mk II Main Battle Tanks, Naval ships, Infantry Combat Vehicle and laser guided bombs. In his various capacities, he led the development of a number of technologies of electro-optical fire control and surveillance systems – EO sensor integration, line of sight stabilization, embedded electronics and software, ballistic computation, weapon slaving, fire control etc.

He took over as Director of Electronics and Computer Science at DRDO HQs on 18th April 2013, where he was instrumental in pushing a large number of DRDO projects of national importance. Later on as Director Tech. (Electronics and Communication Systems),he became part of a DRDO think tank and generated a number of reports related to the areas of ECS cluster and led a team of senior scientists in developing DRDO’s business approach towards immediate requirements of Long Term Integrated Perspective Plan of Services. In recognition of his services, Govt. of India promoted him to the rank of Outstanding Scientist in 2015.

Apart from numerous technical papers in various refereed journals, seminar and conference proceedings, and a number of internal DRDO reports, he has co-edited a DRDO monograph on ‘Night Vision and Electro Optics Technology Review’.

He is an alumnus of IIT Roorkee and IIT Kanpur from where he obtained his B.E. and M. Tech. degrees in Electrical Engg. respectively. He is life member of Optical Society of India (OSI) and Instrument Society of India (ISOI). He is also a past Joint Secretary of the national executive of ISOI. He is a recipient of DRDO Cash prize andLaboratory and DRDO Group Technology Awards.

Products

Air Regenerating Composition

Is a Directed Energy Laser System for remote disposal of unexploded ordnances, surface laid mines, IEDs and other explosive threats located above ground and detected by the sighting sub-system from safe stand-off ranges of 30-250 meters. “LORDS” is a self contained system along with all its support system integrated on TATA-LSV vehicle for stand-alone operation. LORDS comprises of six major sub-systems – Laser Sub-Systems, Laser Optics Module (LOM), Laser Pointing Unit (LPU), Thermal Management System (TMS), Power Sub-Systems (PSS) and Control System (CS)

Eye safe laser for Laser cross-section measurement applications:

An intracavity KTA OPO converted, electro-optically Q-switched Nd: YAG laser has been designed and developed. Thermoelectric coolers (TECs) have been employed to maintain the optimum temperature of laser diode arrays and the combined heat load from the pump chamber and TECs is distributed over the system base plate with embedded heat pipes. Such cooling mechanism has eliminated the requirement of fins and fans in the laser system. Laser source has been developed towards measurement of laser cross-section of co-operative naval targets as per NSTL requirements.

High Energy High Repetition Rate Eye Safe Lasers:

Two experimental prototypes of high energy eye safe lasers have been jointly developed with BI Stepanov Institute of Physics, Minsk, Belarus. One laser is based on Er:Glass laser which directly generates the eye safe wavelength 1540 nm with ~ 25 mJ energy at 20 Hz . Other laser is based on OPO shifted Nd:YAG laser and generates 50 mJ @ 20 Hz at 1570 nm.

Miniature Diode Pumped Nd:YAG laser:

A highly compact, light weight, passively Q-switched miniature diode-pumped Nd: YAG laser has been developed with single clean output pulse (no satellite pulses). The technology is useful for various defence applications including laser range finder, designator, laser ignition and explosives detection etc.

Diode Pumped Nd:YAG Laser for Space Based Altimeter:

LASTEC has developed one unit of ‘Qualification Model’ and one unit of ‘Flight Model’ of a Diode Pumped Nd: YAG Laser transmitter for space based altimeter as a joint development activity with LEOS, ISRO. LASTEC carried out the basic laser design and development including electronics, while LEOS supported for space qualified hardware development.

High Repetition Rate Diode Pumped Er:Glass Laser:

Eye safe lasers operating around 1540 nm have the highest permissible ocular exposures accepted by the ANSI2.136.1-1993 standard (1J/cm2 for single pulses). Er: Glass material directly generates this wavelength. High repetition rate operation is possible by diode pumping where heat generation is minimized. Under second phase of DRDO Photonics Programme two prototypes of high repetition rate eye safe lasers have been developed capable of operating upto 20 Hz.

CW Diode Pumped Microchip Green Laser:

Solid-state microchip lasers are perhaps the ultimate in miniaturization of diode pumped lasers with extremely high spatial profile and single longitudinal mode and ultra short pulse durations. These lasers are formed by application of dielectric mirrors directly to two near parallel surfaces of a thin slice of gain material e.g. Nd: YVO4, Nd: YAG. The short cavities can lead to inherently good mechanical stability as well as single-frequency operation. This technology is being widely explored all over the world for generation of tens of milliwatts to hundreds of milliwatts of CW power in red, green and blue region Microchip lasers find applications not only in industrial and scientific fields but they can also lead to ultra-compact and powerful lasers for defence applications such as dazzler.

High Peak Power Monolithic Miniature Diode Pumped Nd:

YAG Laser:A monolithic, diode side-pumped, passively Q-switched Nd3+ : YAG / Cr4+ : YAG composite laser generating ~ 3 MW peak power pulses at 20 Hz with 15 mJ energy in 5 ns duration has been designed & developed. Such ultra compact and robust laser systems are suitable for variety of applications including range finding, designation and Laser Induced Breakdown Spectroscopy (LIBS) etc. Air breakdown has been demonstrated by focussing the laser output as depicted in picture below.

IR Guided Missile Tester:

IR Guided Missile Tester (IRGMT) is a system for performing in situ functionality tests of R 73 IR Guided Missile onboard the LCA. It is a calibrated IR source that generates the signatures of an aircraft as seen by the IR Guided Missiles. It is a universal test system and can be used for testing other IR guided missiles as well.

LGB Kit Tester:

LGB Kit tester is used for checking the in situ performance of the Griffin LGB kit onboard the LCA. It simulates signatures of Laser Target Designators used for LGB delivery in terms of amplitude, wavelength and PRF code as seen by the seeker head of the LGB.

Coming Soon