Form: 3

Initial statement of beneficial ownership of securities

August 8, 2007

SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Quercus Trust
(Last) (First) (Middle)
2309 SANTIAGO DR.
(Street)
NEWPORT BEACH, CA 92660
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
08/03/2007 		3. Issuer Name and Ticker or Trading Symbol
EMCORE CORP [ EMKR ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 5,141,079 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
Quercus Trust
(Last) (First) (Middle)
2309 SANTIAGO DR.
(Street)
NEWPORT BEACH, CA 92660
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Gelbaum David
(Last) (First) (Middle)
2309 SANTIAGO DR.
(Street)
NEWPORT BEACH, CA 92660
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Gelbaum Monica Chavez
(Last) (First) (Middle)
2309 SANTIAGO DR.
(Street)
NEWPORT BEACH, CA 92660
(City) (State) (Zip)
Explanation of Responses:
Remarks:
/s/ David Gelbaum, Co-Trustee, The Quercus Trust 08/07/2007
/s/ Monica Chavez Gelbaum, Co-Trustee, The Quercus Trust 08/07/2007
** Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.