sapphire laser system produced 120 fs pulses, at 800 nm wavelength with a 1 kHz repetition rate. Individual pulses were directed through a 20 objective lens and focused onto the sample surface to a roughly 8 um diameter spot size ( 1 / e2 Gaussian energy distribution) .

Originally posted by xiaowu787 at 2010-12-09 14:45:59:
看到文献上有这么一段话，用Laser辐照金属，不懂的Laser问题，现在想知道这种波长辐照时在金属（300K）产生的瞬时温度值？怎么算呢？请知道的指点一下，谢谢！！
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sapphire laser system produced 120 fs ...

Originally posted by donkeypku at 2010-12-13 15:38:07:

这个得看吸收多少啊

Originally posted by smy1982 at 2010-12-14 23:21:25:
一维双温模型
就是专门处理 飞秒与金属薄膜
的相互作用。
此双温模型就是处理 飞秒激光烧蚀物质的作用机理，涉及电子与晶格温度随时间的瞬态变化。
看看文献你就明白了

Originally posted by xiaowu787 at 2010-12-16 19:16:29:


我看的文献是讲两种金属通过辐照后能进行反应，现在想知道能反应的最低温度

Originally posted by smy1982 at 2010-12-17 10:18:40:


我只了解到飞秒激光与金属薄膜之间相互作用的情况，两种金属有反应没有看到过。本人所需知识有限，你遇到的问题无能为力啊。

Originally posted by xiaowu787 at 2010-12-18 12:19:19:


再问一下，飞秒激光辐照金属时，有没有可能达到5000K？谢谢