Conference Presentations: International

• Keshav Walia and Arvinder Singh, Self focusing of laser beam in relativistic plasmas by moment theory approach. International Conference on frontiers of Physics at Kathmandu, Nepal during 1^st – 6^th June 2009.
• Keshav Walia and Arvinder Singh, Comparison of two theories for the relativistic self-focusing of laser beam in plasmas. 13^thInternational Conference on Physics of Non-Ideal Plasmasat Chernogolovka, Russia during 13^th –18^th September 2009.
• Keshav Walia and Arvinder Singh, Non-Linear Propagation of intense laser beams through Collisional plasmas.13^thInternational Conference on Physics of Non-Ideal Plasmas at Chernogolovka, Russia during 13^th –18^th September 2009.
• Keshav Walia and Arvinder Singh, Relativistic Self-focusing of elliptical laser beam in plasmas and its effect on Stimulated Brillouin Scattering process. International Symposium on Waves, Coherent Structures and turbulence in plasmasat IPR Gandhinagar, Gujarat during 12^th -15^th January 2010.
• Keshav Walia and Arvinder Singh. Singh, Enhanced Raman Scattering of Elliptical laser beam in a Collisionless plasma. International Symposium on Waves, Coherent Structures and turbulence in plasmasat IPR Gandhinagar, Gujarat during 12^th-15^th January 2010.
• Keshav Walia and Arvinder Singh, Stimulated Raman Scattering of Elliptical laser beam in Collisional Plasma. International advanced workshop on frontiers of Plasma Physics at The Abdus Salam International Centre for Theoretical Physics(ICTP), Italy, during 5^th – 16^th July 2010.
• Keshav Walia and Arvinder Singh, Self-focusing of Gaussian laser beam in a Collisionless plasma and its effect on the plasma Wave Excitation.International advanced workshop on frontiers of Plasma Physics at The Abdus Salam International Centre for Theoretical Physics (ICTP), Italy, during 5^th – 16^th July 2010.
• Keshav Walia and Arvinder Singh, Enhanced Brillouin scattering of elliptical laser beam in a collisionless plasma. 31st European Conference on Laser interaction with matter. Budapest, Hungary during 6th-10th September 2010.
• Keshav Walia and Arvinder Singh, Relativistic self-focusing of elliptical laser beam in plasma and its effect on plasma wave and second harmonic generation. 31st European Conference on Laser interaction with matter. Budapest, Hungary during 6th-10th September 2010.
• Keshav Walia and Arvinder Singh, Stimulated Brillouin Scatering of Gaussian laser beam in Collisionless Plasma. International Workshop on Kinetic Processes in Plasma: Instabilities, Turbulence and Transportat Ruhr-universtat Bochum, Germany during 8^th -11^thNovember 2010.
• Keshav Walia and Arvinder Singh, Self-focusing of Gaussian laser beam through collisionless plasmas and its effecton Second Harmonic generation. International Workshop on Kinetic Processes in Plasma: Instabilities, Turbulence and Transportat Ruhr-universtat Bochum, Germany during 8^th -11^thNovember 2010.
• Keshav Walia and Arvinder Singh, Stimulated Brillouin Scattering of Elliptical Laser beam in relativistic Plasma. 17^thInternational Conference on Atomic Processes in Plasmas at Queen’s University Belfast, UK during 19^th -22^nd July 2011.
• Keshav Walia and Arvinder Singh, Self-focusing of Gaussian laser beam in Collisionless magnetoplasma and its effect on second harmonic generation. 17^thInternational Conference on Atomic Processes in Plasmas at Queen’s University Belfast, UK, during 19^th -22^nd July 2011.
• Keshav Walia and Arvinder Singh, Relativistic Self-focusing of laser beam in Plasma and its effect of second harmonic generation. 21^stAnnual international Laser Physics Workshop (LPHY’S 12) at University of Calgary, Canada during 23^rd -27^thJuly 2012.
• Keshav Walia and Arvinder Singh, Self-focusing of high power Gaussian laser beam in Plasma and its effect on Second harmonic generation. Joint ICTP-IAEA College on Plasma Physicsat ICTP, Trieste, Italy during 1^st -12^th October 2012.
• Keshav Walia and Arvinder Singh, Stimulated Brillouin Scattering of Gaussian laser beam in Collisional Magnetoplasma. INDO-GERMAN Workshop on Advanced Materials for future energy requirementsat Delhi University during 29^thNovember-1^st December 2012.
• Keshav Walia, Interaction of high power gaussian beam with electron plasma wave and its effect on Stimulated Raman Scattering process. Joint ICTP-IAEA College on Advanced plasma Physicsat ICTP, Trieste, Italy during 18^th -29^thAugust 2014.
• Keshav Walia, Study of Second harmonic generation by high power gaussian laser beam in underdense Plasma. Joint ICTP-IAEA College on Advanced plasma Physicsat ICTP, Trieste, Italy during 18^th -29^th August 2014
• Keshav Walia, Stimulated Raman scattering of q-Gaussian laser beam in Collisional magneto-plasma. 597thWilhelm and Else Heraeus Seminar on Stochasticity in FusionPlasmas at Physikzentrum, Bad Honnef, Germany during 9^th-12^th September 2015.
• Keshav Walia, Self-focusing of q-Gaussian laser beam in a Collisionless plasma and its effect on the plasma Wave Excitation. 597thWilhelm and Else Heraeus Seminar on Stochasticity in FusionPlasmas at Physikzentrum, Bad Honnef, Germany during  9^th -12^th September  2015.
• Keshav Walia, Second Harmonic Generation of Gaussian Laser Beam in Thermal Quantum Plasma. Joint ICTP-IAEA College on Plasma Physics at ICTP, Trieste, Italy during 7^th -18^th November 2016.
• Keshav Walia, Effect of Self-focused q- Gaussian Laser Beam on Plasma Wave Excitation in Collisional Plasma. Joint ICTP-IAEA College on Plasma Physics at ICTP, Trieste, Italy during 7^th -18^th November 2016.
• Keshav Walia, Self-focusing of high power laser beam in unmagnetized plasma and its effect on Second harmonic generation. Joint ICTP-IAEA College on Plasma Physics at ICTP, Trieste, Italy during 29^th October 2018 to 10^th November 2018.
• Keshav Walia, Self-focusing of q-gaussian laser beam in relativistic plasma and its effect on Stimulated Brillouin Scattering process. Joint ICTP-IAEA College on Plasma Physics at ICTP, Trieste, Italy during 29^th October 2018 to 10^th November 2018.
• Keshav Walia, Second harmonic generation of high power laser beam in relativistic unmagnetized plasma: Quantum effects.  Winter College on Optics held at ICTP, Italy during 10^th February 2020 to 21^st February 2020.
• Keshav Walia, Impact of Self-focused high power beam on Stimulated Raman Scattering in Collisional magnetoplasma presented in “Joint ICTP-IAEA College on Plasma Physics for fusion applications” ICTP, Trieste, Italy, 7^th November 2022 to 18^th November 2022.
• Keshav Walia,"Terahertz generation by two cross-focused Cosh-Gaussian laser beams in magnetized plasma"presented in “Winter Colege on Optics” ICTP, Trieste, Italy, 6^th  February 2023 to 17^th February 2023.

Conference Presentations: - National

• Keshav Walia and Arvinder Singh, Self-focusing of elliptical laser beam in relativistic plasmas and its effect on Stimulated Raman Scattering. 24^thNational Symposium on Plasma Science and Technology at NIT Hamirpur, HP (India) during   8^th-13^th December 2009.