TAILIEUCHUNG - Transient absorption phenomena in synthetic HPHT and CVD diamonds for a fast timing in nuclear instrumentation

We investigate the transient absorption phenomena in synthetic diamonds obtained by High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD) methods. The aim of our study is to search inorganic crystalline media combining ionizing radiation and investigate their detecting properties and non-linear absorption of ultra-short laser pulses. The pump-probe technique with 140 fs laser pulses was used for the investigations. | Communications in Physics, Vol. 26, No. 3 (2016), pp. 253-259 DOI: TRANSIENT ABSORPTION PHENOMENA IN SYNTHETIC HPHT AND CVD DIAMONDS FOR A FAST TIMING IN NUCLEAR INSTRUMENTATION O. BUGANOV† , S. TIKHOMIROV AND E. BARBARCHIK B. I. Stepanov Institute of Physics, 220072, Minsk, pr. 60 Nezavisimosti M. KORJIK, A. FEDOROV AND V. MECHINSKY Institute for Nuclear Problems of BSU, 220030, Minsk, 11 Bobruiskaya G. TAMULAITIS Vilnius University, LT-10222, Vilnius, Saultekio 9-III † E-mail: Received 05 December 2016 Accepted for publication 05 January 2017 Abstract. We investigate the transient absorption phenomena in synthetic diamonds obtained by High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD) methods. The aim of our study is to search inorganic crystalline media combining ionizing radiation and investigate their detecting properties and non-linear absorption of ultra-short laser pulses. The pump-probe technique with 140 fs laser pulses was used for the investigations. Keywords: two-photon absorption, synthetic diamonds, absorption. from excited states, fast timing. Classification numbers: , , . I. INTRODUCTION Search of the processes which will form time marks with precision better than 10 ps and use the interaction of ionizing radiation with detecting media is a crucial demand for the development of a new generation of the detecting technique, especially in experimental particle and high energy physics. Recently we suggest using the sub-picosecond phenomena occurring just after the interaction of scintillating material with ionizing radiation for temporal mark formation by probing the material with ultra-short laser pulses [1–4]. c 2016 Vietnam Academy of Science and Technology 254 TRANSIENT ABSORPTION PHENOMENA IN SYNTHETIC HPHT AND CVD DIAMONDS . One of such phenomena is the elastic polarization due to the local lattice distortion caused by the .

• Vật lý
• Communications in Physics
• Transient absorption phenomena
• Synthetic HPHT and CVD diamonds
• Fast timing in nuclear instrumentation
• Chemical Vapor Deposition
• High Pressure High Temperature
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