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- Jul 31, 2010
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Hi Guys.
As promised, here are some pics of the laser system that I use at work for ablation. We have 4 of these setups. 3 are the Spitfire pro and the other is an older Hurricane.
I will try and explain how it works:
The Spitfire Pro is a Ti-Sapphire amplifier/oscillator, that delivers highly accurate sub 100 femto second pulses of 650-1100nm radiation with pulse energies up to 2.5 mj. Peak power of each pulse is about 350KW!!! We choose 800nm as Ti-sapphire is most effecient at this frequency and we pulse at 5khz
The seed laser is a Spectra physics Mai Tai Ti-Sapphire laser. We use this laser because of its capability to deliver sub 100 femto second pulses. Such short pulses are necessary to ablate materials, without destroying the surrounding area. Basically the pulse is so short, it vapourizes the target material so quickly that the material cannot conduct any heat to its surroundings.
The spitfire amplifier itself needs to be pumped and for this setup, we use a Spectra physics Empower, this laser is rated at 60W and the wavelength is 527nm. This laser is a ND:YLF DPSS laser, it too is pulsed with energies of up to 30mj, not sure of the peak power on this.
The purpose of the spitfire is to amplify the pulses from the Maitai seed laser, we then use the laser controls to select and release the pulse that we want once it has been amplified enough at exactly the right moment, we use an external highly accurate frequency generator to achieve this
once we have the pulse we require, it is shunted through an optics table and on to the ablation target.
The ablation itself, I cannot show you, as our setup is obviously industry sensitive. I hope you have found this interesting and if you have any questions, please feel free to ask.
Best Regards.
Jason
As promised, here are some pics of the laser system that I use at work for ablation. We have 4 of these setups. 3 are the Spitfire pro and the other is an older Hurricane.
I will try and explain how it works:
The Spitfire Pro is a Ti-Sapphire amplifier/oscillator, that delivers highly accurate sub 100 femto second pulses of 650-1100nm radiation with pulse energies up to 2.5 mj. Peak power of each pulse is about 350KW!!! We choose 800nm as Ti-sapphire is most effecient at this frequency and we pulse at 5khz
The seed laser is a Spectra physics Mai Tai Ti-Sapphire laser. We use this laser because of its capability to deliver sub 100 femto second pulses. Such short pulses are necessary to ablate materials, without destroying the surrounding area. Basically the pulse is so short, it vapourizes the target material so quickly that the material cannot conduct any heat to its surroundings.
The spitfire amplifier itself needs to be pumped and for this setup, we use a Spectra physics Empower, this laser is rated at 60W and the wavelength is 527nm. This laser is a ND:YLF DPSS laser, it too is pulsed with energies of up to 30mj, not sure of the peak power on this.
The purpose of the spitfire is to amplify the pulses from the Maitai seed laser, we then use the laser controls to select and release the pulse that we want once it has been amplified enough at exactly the right moment, we use an external highly accurate frequency generator to achieve this
once we have the pulse we require, it is shunted through an optics table and on to the ablation target.
The ablation itself, I cannot show you, as our setup is obviously industry sensitive. I hope you have found this interesting and if you have any questions, please feel free to ask.
Best Regards.
Jason