EXHIBIT A

JOINT FILING AGREEMENT

This will confirm the agreement by and among all the undersigned that
the Schedule 13G filed on or about this date with respect to the beneficial
ownership of the undersigned of shares of the Common Stock, no par value per
share, of Emcore Corporation is being filed on behalf of each of the
undersigned. This agreement may be executed in two or more counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

Dated: June 3, 1999

GE CAPITAL EQUITY INVESTMENTS, INC.

By: /s/ Michael E. Pralle
-------------------------------------
Name: Michael E. Pralle
Title: President



GENERAL ELECTRIC CAPITAL CORPORATION

By: /s/ Michael E. Pralle
-------------------------------------
Name: Michael E. Pralle
Title: Vice President




GENERAL ELECTRIC CAPITAL SERVICES, INC.

By: /s/ Michael E. Pralle
-------------------------------------
Name: Michael E. Pralle
Title: Attorney in Fact




GENERAL ELECTRIC COMPANY

By: /s/ Michael E. Pralle
-------------------------------------
Name: Michael E. Pralle
Title: Attorney in Fact


* Powers of attorney, each dated as of April 30, 1998, by General Electric
Capital Services, Inc. and General Electric Company, respectively, are hereby
incorporated by reference to Schedule 13D for Telescan, Inc., filed January 14,
1999 by GE Capital Equity Investments, Inc.



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