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                                                                   EXHIBIT 10.35

                          NON-RECOURSE PROMISSORY NOTE

$276,021                                                      September 30, 2003

FOR VALUE RECEIVED, Robert A. Blair promises to pay to IPG Photonics
Corporation, a Delaware corporation (the "Company"), the principal sum of TWO
HUNDRED AND SEVENTY SIX THOUSAND AND TWENTY ONE DOLLARS ($276,021), together
with simple interest on the unpaid principal hereof from the date hereof at the
fixed rate of 1.52% per annum.

Interest only shall accrue and be payable on November 29, 2003 and each
anniversary of the date thereof and any extension or renewal thereof.

All unpaid principal and accrued and unpaid interest shall become due and
payable on November 29, 2005, or any extension or renewal thereof, or upon any
sale of the shares securing this Note. Should the undersigned fail to make full
payment of interest for a period of 30 days or more after the due date thereof,
or any extension or renewal thereof, the entire unpaid principal balance of this
Note and all accrued and unpaid interest thereon shall become immediately due at
the option of the holder of this Note, subject to the limitations of this Note.
Payments of principal and interest shall be made in lawful money of the United
States of America.

This Note is secured by 250,000 shares of the Company's Common Stock pursuant to
the Pledge Agreement between the Company and Robert A. Blair, dated the date
hereof, and the holder shall have no recourse against the undersigned, and shall
be required to proceed only against the collateral securing this Note in the
event of default.

This Note is non-negotiable. The rights and benefits of this Note shall be
non-assignable and non-transferable by either the Company or Robert A. Blair.
This Note supersedes and replaces in its entirety the Recourse Promissory Note,
dated November 29, 2000, executed and delivered by Robert A. Blair.

This Note shall not be modified, amended, extended, renewed nor shall any waiver
be effective against either party unless such modification, amendment,
extension, renewal or waiver shall be in writing and signed by both the Company
and Robert A. Blair.


/s/ Robert A. Blair
-------------------------------------
Robert A. Blair
