From owner-chemistry@ccl.net Sun Nov 22 03:15:01 2009
From: "YZ Lan lyzhao\a/zjnu.cn" <owner-chemistry.:.server.ccl.net>
To: CCL
Subject: CCL: Two questions about the nonlinear optical property
Message-Id: <-40747-091122031336-27582-0nWL8ASXsZXBTl2Kr2RxUw.:.server.ccl.net>
X-Original-From: "YZ  Lan" <lyzhao|-|zjnu.cn>
Date: Sun, 22 Nov 2009 03:13:32 -0500


Sent to CCL by: "YZ  Lan" [lyzhao[]zjnu.cn]
Dear CCLers,
I am very sorry to ask again, but I look forward to some comments for my following questions. If they are stupid, pls forgive me.
1, Is the sign of the (hyper)polarizability related to the definition of coordinate direction of a molecule?

2, Multiphoton absorption means a material can absorb multiphotons (i.e. n(hv)) simultaneously. Is the Einstein formula, hv=(1/2)mv^2+W, possibly changed to n(hv)=(1/2)mv^2+W?

Could you give me some references?

Great thanks for any helps!
Lan