According to Apache Trademark Policy page, I can use Apache feather logo in my slides without asking permissions.
You needn't ask us for permission to use the Apache feather logo (the version published by us here ) on your own website solely as a hyperlink to www.apache.org or to an appropriate Apache project, or in other materials, such as presentations and slides,
In contrast, there is another rule for Apache Foo software. It does not include "presentations and slides"
You needn't ask us for permission to use Apache's graphics logos (the versions published on individual project's websites) on your own website solely as a hyperlink to the specific Apache project website or to www.apache.org. All other uses of Apache Foo (and similar) graphic logos must be approved in writing by VP, Apache Brand Management, member of the Brand Management Committee, or the relevant Apache projects' VP.
Should I contact them to use logos in my presentation?