<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>roushsecpoa.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
POWER OF ATTORNEY




      Know all by these presents that the undersigned
hereby constitutes and appoints Robert Buckley, Paula A.
Pluta and Joanna Tow as his true and lawful attorneys-in-fact
to:
(1)	execute for and on behalf of the
undersigned Forms 3, 4 and 5 in
accordance with Section 16(a) of the
Securities Exchange Act of 1934, as
amended, and the rules thereunder, for
and in relation to any and all
reportable transactions in the
securities of GSI Group, Inc.;
(2)	do and perform any and all acts for
and on behalf of the undersigned
which may be necessary or desirable
to complete the execution of any such
Form 3, 4 and 5 and timely filing of
such forms with the United States
Securities and Exchange Commission
and any other authority; and
(3)	take any other action of any type
whatsoever in connection with the
foregoing which, in the opinion of
such attorneys-in-fact, may be of
benefit to, in the best interest of, or
legally required by, the undersigned, it
being understood that the documents
executed by such attorneys-in-fact on
behalf of the undersigned pursuant to
this Power of Attorney shall be in such
form and shall contain such terms and
conditions as such attorneys-in-fact
may approve in their discretion.
      The undersigned hereby grants to each attorney-in-
fact, individually, full power and authority to do and perform
all and every act and thing whatsoever requisite, necessary
and proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as
each attorney-in-fact might or could do if personally present,
with full power of substitution or revocation, hereby
ratifying and confirming that each attorney-in-fact, or his
substitute or substitutes, shall lawfully do or cause to be done
by virtue of this power of attorney and the rights and powers
herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming any of the
undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934, as amended.
      IN WITNESS WHEREOF, the undersigned has
caused this Power of Attorney to be executed as of this 21st
day of December, 2011.


	/s/ John Roush
	Signature

	John Roush
	Print Name
</TEXT>
</DOCUMENT>
