Optical diagnostics of gold plasmas produced by infrared laser ablation

Laser-Induced Plasmonic Nanobubbles and Microbubbles in Gold Nanorod Colloidal Solution

“…In this case, some laser-induced plasma is generated inside a microbubble, accompanying the cavitation. This behavior is similar to the laser ablation [ 45 ]. On the other hand, the average energy of the measured nanobubbles with a maximum radius of 288 nm is about 10 −14 J ( Figure 4 ), which is less than the energy needed to melt a GNR, 4 × 10 −14 J.…”

Nanoparticles in analytical laser and plasma spectroscopy – a review of recent developments in methodology and applications

“…117 Naturally, much more reliable data can be obtained when the highly transient LIP is monitored with appropriate temporal resolution. Evolution of electron concentration as derived from Stark broadening, [118][119][120] temperature evolution calculated from the Boltzmann plot 120 and Saha-Boltzmann plot, 118,121 or relative line intensity 119 methods are routinely applied. It should be noted that even in case of temporally resolved measurements, care should be taken when temperature calculation methods relying on the existence of LTE are applied.…”

Spatiotemporally resolved optical emission spectroscopy and harmonic generation in Cu plasmas

“…The intensity response of the detection system in the spectral region 350 -600 nm was calibrated using a tungsten filament lamp (Osram Xenophot HLX 64640, 24 V, 150 W) (see ref. [32] for more details).…”

“…Also, OES assessment of the electron density in plasmas employed for harmonic generation has been reported for instance in [25], or even, in a reverse approach, harmonic generation has been employed as a measurement of electron density through OES in a quasi-phase matching configuration [30]. On the other hand, detailed analysis of optical emissions has shown to be an invaluable tool for the description of laser-induced plasmas [13], [31], [32], one that can not only provide information on a given parameter like electron density but that, particularly when performed with high spatial, temporal and spectral resolution, can yield valuable and precise information on a broad range of plasma characteristics like composition, excitation temperature, degree of ionization or plasma expansion behaviour. However, a detailed description of the features of the plasma through optical emission spectroscopy, together with the determination of their repercussions on harmonic generation, is, to our knowledge, lacking.…”