Page 20 - CFM_Newsletter_CY22

Transparent ceramics for high energy lasers
Dr. Samuel Paul David, Institute of Physics Czech Academy of Sciences, The Czech
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Republic, March 30
Dr. Samuel, Paul David currently working a Senior Research at HiLASE Center,
Institute of Physics, Czech Academy of Sciences, The Czech Republic, dealt with
transparent ceramics for high energy lasers in his talk. The talk focussed on the
world record and the role of transparent ceramics in such lasers. He started with
explaining the recent findings in the world of laser. A series of world records on
laser output power was achieved in a diode-pumped solid-state laser system
termed as “BIVOJ”, recently. Converting such high-energy laser pulses into its
second harmonic wavelength, the team also achieved another world record laser
average power at 515 nm. The achievement was demonstrated at HiLASE
Centre, Institute of Physics of The Czech Academy of Sciences by a team of
researchers in collaboration with Science and Technology Facilities Council
(STFC), UK. He specified the use of transparent ceramics as a gain media as one of the key factors behind
this laser. Transparent ceramics provide distinct benefits over crystalline and glass gain media for lasers in
terms of production and functionality. He also gave ideas about the manufacturing technology and issues
of transparent ceramics.

Importance of Precise Measurements in Advanced Science and Technology

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N Vijayan, National Physical Laboratory, New Delhi, April 29
Dr. N Vijayan, Principal Scientist & Associate Professor, National Physical
Laboratory, New Delhi, discussed the huge problem that India faces due to poor
quality import on one hand, and rejection of our export at foreign borders on the
other hand, causing a huge economic loss to the country. The talk covered the
importance of accurate and precise measurements for research and
manufacturing sectors. The major reason for the poor-quality import on hand is
the non-availability of reasonably priced CRMs to the various test labs. He
mentioned about testing laboratory dealing with the quality control of in-house
material/products/services and import/export business in India. But in many
cases, in order to export the Indian product, the testing is done in foreign country,
which makes the whole process expensive and but also takes away our jobs
related to quality control and testing. Therefore, he suggested that the in-house production of the
BNDs/CRMs is essential for import/export as well as the job creation (as the BND production will require a
huge manpower and also for their distribution and marketing). He also concluded that CSIR-NPL is actively
working for the development of various Indian reference Materials (BNDs) in different sectors of our day-to-
day life.

CFM Newsletter Jan. – Dec. 2022 20 Vol – 2