Structural, optical, and nonlinear optical properties of indium nanoparticles prepared by laser ablation

Efficient keV X-ray Generation from Irradiation of in-situ Produced Silver Clusters by Ti:sapphire Laser Pulses

“…Increasing the delay results in the arrival of more and more clusters in the interaction region of the main beam. The observed increase in absorption with increasing pre-pulse intensity is then simply understood from the increase in number as well as the velocity of clusters produced at higher pre-pulse intensity [19,20].…”

“…SEM pictures of the deposit taken at two prepulse intensities, one at 3×10 12 W/cm 2 and the other at 10 10 W/cm 2 , clearly revealed a much higher cluster density corresponding to the deposition taken at the higher intensity of the sub-ns pulse. The particle density in this case (I = 3×10 12 W/cm 2 ) was estimated to be ～100 particles/μm 2 from the SEM pictures [19,20]. In the work reported here, we carried out the absorption measurements of intense femtosecond laser pulses by these in situ produced clusters, using the experimental setup shown in Fig.…”

“…In our previous work [19,20], we have studied cluster generation from solid target irradiation by sub-ns laser pulses from the debris deposition on a substrate (the details of the experimental setup are described in refs 19, 20). SEM pictures of the deposit taken at two prepulse intensities, one at 3×10 12 W/cm 2 and the other at 10 10 W/cm 2 , clearly revealed a much higher cluster density corresponding to the deposition taken at the higher intensity of the sub-ns pulse.…”

“…The reason of formation of clusters is the relaxation of material in extreme conditions via fragmentation and molten material ejection [16][17][18]. We have shown in our earlier experiments large cluster formation (size 10-80nm) using 300 ps laser pulses focused on various materials like Ag, Efficient keV X-ray Generation from Irradiation of in-situ Produced … -U. Chakravarty et al In, Cu etc [19,20], which may be used as targets for x-ray generation. In this paper we present a study of laser energy absorption of intense Ti: Sapphire laser pulses in such in situ produced clusters, and the x-ray generation from them.…”

Preparation and nonlinear optical properties of indium nanocrystals in sodium borosilicate glass by the sol–gel route

“…In recent years, metal nanocrystals have attracted broad attention because of their diverse applications and technological importance in nonlinear optics and optoelectronics [1]. Among them, metal nanocrystals doped glasses exhibit an ultrafast electron response within a few of picoseconds, and also have large thirdorder optical nonlinearities owing to the large local-field enhancement factor and the strong resonant absorption of the surface plasmon [2][3][4][5].…”