From leong@ecf.utoronto.ca Fri Nov 15 12:52:05 2002 Return-Path: Received: from cannon.ecf.utoronto.ca (cannon.ecf.utoronto.ca [128.100.8.5]) by helios.physics.utoronto.ca (8.9.3/8.9.3) with ESMTP id MAA6264215 for ; Fri, 15 Nov 2002 12:52:05 -0500 (EST) Received: from remote.ecf (remote.ecf [128.100.8.15]) by cannon.ecf.utoronto.ca (8.9.3/8.9.3) with ESMTP id MAA01769 for ; Fri, 15 Nov 2002 12:51:44 -0500 Received: from localhost (leong@localhost) by remote.ecf (8.9.3/8.9.3) with ESMTP id MAA08543 for ; Fri, 15 Nov 2002 12:51:44 -0500 X-Authentication-Warning: remote.ecf: leong owned process doing -bs Date: Fri, 15 Nov 2002 12:51:44 -0500 (EST) From: Leong Keith R X-X-Sender: To: Subject: PHY485-abstract Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Status: R Bessel Beams Keith Leong Bessel beams are solutions of Helmholtz equation that have the special property of allowing for dispersionless propagation in free space. This implies that the transverse intensity does not change during propagation. However, only pseudo- nondiffracting beam can be made experimentally. Other properties of Bessel beams include but not limited to are self-reconstruction, the transverse energy profile, and resistance to distortion. I will attempt to explain why ideal Bessel beams cannot be made experimentally, as well as some of there properties and various applications. -- Best Wishes, Keith Leong --------------------------------------- "Man holds in his mortal hands the power to abolish all forms of human poverty and all forms of human life." - J.F.K.