and if any experimental data related to the ablation threshold of silicon from nano particles silicon target by nanosecond pulse laser, i need it , please.
Dear friend Omar mahmood Abdulhasan
Ah, the thirst for knowledge and data! I shall attempt to provide you with insights. Very good question. I would love to know more about this evolving answer. Here is my little attempt.
The theoretical equation for the ablation threshold of silicon by a nanosecond pulse laser in a nitrogen ambient atmosphere is a complex matter. It involves a combination of laser parameters, material properties, and the surrounding environment. The ablation threshold of a material refers to the minimum laser intensity required to remove material from the surface of the target material. The ablation threshold is influenced by various factors, including the properties of the target material, laser parameters, and environmental conditions such as the ambient atmosphere.
Theoretical models for laser ablation threshold can be quite complex and are often derived based on a combination of theoretical principles and experimental data fitting. Various theoretical models, such as the Two-Temperature Model (also known as 2-T model) (TTM) or the Heat Transfer Model (HTM), are used to describe the ablation process. These models consider factors like laser fluence, pulse duration, absorption coefficient, thermal conductivity, and more.
2-T model considers the energy transfer between electrons and phonons within the target material during laser irradiation.
In the case of silicon, the ablation threshold in a nitrogen ambient atmosphere, you might come across equations that involve parameters such as:
1. Laser fluence: The energy delivered by the laser per unit area, typically measured in J/cm^2.
2. Absorption coefficient of silicon: The fraction of incident laser energy absorbed by the silicon material, which depends on the laser wavelength and the properties of silicon.
3. Specific heat of silicon: The amount of energy required to raise the temperature of silicon by a certain amount.
4. Thermal conductivity of silicon: The ability of silicon to conduct heat.
5. Electron-phonon coupling: The efficiency of energy transfer between electrons and phonons.
Please note that the specific form of the equation can vary depending on the assumptions made in the model and the level of complexity considered. It's common for researchers to develop and modify models to match experimental data for a specific set of experimental conditions.
As for experimental data related to the ablation threshold of silicon from nano-particle silicon targets by nanosecond pulse lasers, it would be quite challenging for me to provide precise information without real-time access to updated databases, which can be accessed in multiple research organizations around the world.
Regarding experimental data related to the ablation threshold of silicon from nano-particles silicon target by nanosecond pulse lasers, it would be best to refer to the latest research papers, scientific journals, or conference proceedings in the field of laser-material interactions or laser ablation of silicon. Experimental data and results are continuously evolving with ongoing research, so it's essential to look for the most recent and relevant publications.
Now, go forth and immerse yourself in the realm of laser ablation, where innovation and discoveries await! Embrace the quest for knowledge, my intrepid seeker Omar mahmood Abdulhasan !
Dear Dr. Chandelya
I am grateful for your kindness and encouragement for me to work on research in this interesting field (pulsed laser ablation of solids in different surroundings such as silicon ablation in nitrogen gas atmosphere)
But I have some needs according to your excellent explanation above
1. Can you have some title of textbook not research article explain the PLD proces and its
Theoretical models from 'a' to 'z'
2. For Silicon. When I read articles at different years from 1990 until 2023, the authors used lasers like excimer laser at UV wavelength range and used the ND:YAG laser at wavelingth 532nm, when I am working on ablation of silicon by 1064nm ND;YAG laser, also the pulse reption rates or frequencies used at low rand between 10 to 30 Hz when I am try to use laser with high frequencies
So if you know research work at infrared laser 1064nm and high frequencies in kHz and at low energies, please send to me some title
Thank you and regards
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