CUSIP No. 290846104

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                  EMCORE Corp.

                                (Name of Issuer)

                           Common Stock, no par value

                         (Title of Class of Securities)

                                    290846104

                                 (CUSIP Number)

                            Kathryn Klinedinst, Esq.
                Greenberg Glusker Fields Claman & Machtinger LLP
                      1900 Avenue of the Stars, Suite 2100
                              Los Angeles, CA 90067
                                 (310) 201-7576

   (Name, Address and Telephone Number of Person Authorized to Receive Notices
                               and Communications)

                                  July 24, 2007
             (Date of Event which Requires Filing of this Statement)

If the reporting person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is filing
this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g),
check the following box / /.

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Section 240.13d-7(b) for
other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


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CUSIP No. 290846104


(1)   Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      David Gelbaum, Trustee, The Quercus Trust

(2)   Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (A) /X/
                                                                         (B) / /

(3)   SEC Use Only

(4)   Source of Funds (See Instructions)

      PF

(5)   Check if Disclosure of Legal Proceedings is Required Pursuant to
      Items 2(d) or 2(e)
                                                                             / /

(6)   Citizenship or Place of Organization

      U.S.

                                (7)     Sole Voting Power
                                        -0-

Number of Shares                (8)     Shared Voting Power
Beneficially Owned                      4,402,245
by Each Reporting
Person With                     (9)     Sole Dispositive Power
                                        -0-

                                (10)    Shared Dispositive Power
                                        4,402,245

(11)  Aggregate Amount Beneficially Owned by Each Reporting Person
      4,402,245

(12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
      (See Instructions)                                                     / /

(13)  Percent of Class Represented by Amount in Row (11)
      8.7%(1)

(14)  Type of Reporting Person (See Instructions)
      IN

-------------------------
(1) Based on 50,889,524 shares of Common Stock as reported in the Issuer's
Quarterly Report on Form 10-Q for the quarter ended June 30, 2006.


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CUSIP No. 290846104


(1)   Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Monica Chavez Gelbaum, Trustee, The Quercus Trust

(2)   Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (A) /X/
                                                                         (B) / /

(3)   SEC Use Only

(4)   Source of Funds (See Instructions)

      PF

(5)   Check if Disclosure of Legal Proceedings is Required Pursuant to
      Items 2(d) or 2(e)
                                                                             / /

(6)   Citizenship or Place of Organization

      U.S.

                                (7)     Sole Voting Power
                                        -0-

Number of Shares                (8)     Shared Voting Power
Beneficially Owned                      4,402,245
by Each Reporting
Person With                     (9)     Sole Dispositive Power
                                        -0-

                                (10)    Shared Dispositive Power
                                        4,402,245

(11)  Aggregate Amount Beneficially Owned by Each Reporting Person
      4,402,245

(12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
      (See Instructions)                                                     / /

(13)  Percent of Class Represented by Amount in Row (11)
      8.7%(1)

(14)  Type of Reporting Person (See Instructions)
      IN

-------------------------
(1) Based on 50,889,524 shares of Common Stock as reported in the Issuer's
Quarterly Report on Form 10-Q for the quarter ended June 30, 2006.


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CUSIP No. 290846104


(1)   Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      The Quercus Trust

(2)   Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (A) /X/
                                                                         (B) / /

(3)   SEC Use Only

(4)   Source of Funds (See Instructions)

      PF

(5)   Check if Disclosure of Legal Proceedings is Required Pursuant to
      Items 2(d) or 2(e)
                                                                             / /

(6)   Citizenship or Place of Organization

      U.S.

                                (7)     Sole Voting Power
                                        -0-

Number of Shares                (8)     Shared Voting Power
Beneficially Owned                      4,402,245
by Each Reporting
Person With                     (9)     Sole Dispositive Power
                                        -0-

                                (10)    Shared Dispositive Power
                                        4,402,245

(11)  Aggregate Amount Beneficially Owned by Each Reporting Person
      4,402,245

(12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
      (See Instructions)                                                     / /

(13)  Percent of Class Represented by Amount in Row (11)
      8.7%(1)

(14)  Type of Reporting Person (See Instructions)
      OO

-------------------------
(1) Based on 50,889,524 shares of Common Stock as reported in the Issuer's
Quarterly Report on Form 10-Q for the quarter ended June 30, 2006.


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CUSIP No. 290846104


Item 1.  Security and Issuer

         Issuer:  EMCORE Corp.

         Security:  Common Stock, no par value ("Common Stock")

Item 2.  Identity and Background

         (a) This Statement is being filed by The Quercus Trust (the "Trust"),
David Gelbaum, an individual, as co-trustee of the Trust, and Monica Chavez
Gelbaum, an individual, as co-trustee of the Trust (collectively, the "reporting
persons").

         (b) The reporting persons' business address is 2309 Santiago Drive,
Newport Beach, California 92660.

         (c) David Gelbaum and Monica Chavez Gelbaum are investors; the Trust is
a revocable trust formed for estate planning purposes.

         (d) None of the reporting persons has, during the last five years, been
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

         (e) None of the reporting persons has, during the past five years, been
a party to a civil proceeding of a judicial or administrative body of competent
jurisdiction and as a result of such proceeding was or is subject to a judgment,
decree or final order enjoining future violations of, or prohibiting or
mandating activities subject to, federal or state securities laws or finding any
violation with respect to such laws.

         (f) Each of Mr. and Ms. Gelbaum is a citizen of the United States of
America. The Trust is a California statutory trust.

Item 3.  Source and Amount of Funds or Other Consideration

         All shares of Common Stock were purchased using personal funds.

Item 4.  Purpose of Transaction

         The shares of Common Stock were purchased by the Trust for investment
purposes. The reporting persons have no plans or proposals which relate to or
which would result in any of the actions specified in clauses (a) through (j) of
Item 4 of Schedule 13D. However, the reporting persons retain their rights to
modify their plans with respect to the transactions described in this Schedule
13D, to vote, acquire or dispose of securities of the Issuer and to formulate
plans and proposals which could result in the occurrence of any such events,
subject to applicable laws and regulations.

Item 5.  Interest in Securities of the Issuer

         (a) As of the date of this Schedule 13D, each reporting person
beneficially owns 4,402,245 shares of Common Stock, which are held of record by
the Trust.

         (b) Each of David Gelbaum and Monica Chavez Gelbaum, acting alone, has
the power to exercise voting and investment control over the shares of Common
Stock owned by the Trust.

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CUSIP No. 290846104


         (c) Since June 1, 2007, the Trust has purchased shares of Common Stock
in brokered transactions as follows:

          Date                    Number of Shares         Price Per Share
          ----                    ----------------         ---------------

        06/18/07                     175,251                 $4.9824
        06/18/07                     240,426                  4.9824
        06/19/07                     137,375                  4.9543
        06/20/07                     215,265                  5.0287
        06/21/07                     140,000                  5.241
        06/22/07                       7,360                  5.24
        06/25/07                     200,000                  5.469
        07/03/07                     115,000                  5.775
        07/05/07                     130,000                  5.95
        07/06/07                     125,000                  5.9702
        07/09/07                     180,000                  6.045
        07/10/07                     315,000                  6.0619
        07/11/07                     135,000                  6.0419
        07/24/07                     320,675                  7.917
        07/26/07                     431,700                  8.083
        07/27/07                     375,600                  7.813
        07/30/07                     220,000                  7.7899
        08/01/07                     331,100                  7.4894
        08/02/07                     278,618                  7.4429

         (d) Not applicable.

         (e) Not applicable.

Item 6.  Contracts, Arrangements, Understandings or Relationships With
         Respect to Securities of the Issuer

         None.

Item 7.  Material to Be Filed as Exhibits

         Exhibit A:  Agreement Regarding Joint Filing of Schedule 13D.


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CUSIP No. 290846104


SIGNATURE

         After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information set forth in this
statement is true, complete and correct and agrees that this statement may be
filed jointly with the other undersigned parties.


Dated:  August 2, 2007            /s/ David Gelbaum
                                  ----------------------------------------------
                                  David Gelbaum, Co-Trustee of The Quercus Trust



                                  /s/ Monica Chavez Gelbaum
                                  ----------------------------------------------
                                  Monica Chavez Gelbaum, Co-Trustee of The
                                  Quercus Trust



                                  /s/ David Gelbaum
                                  ----------------------------------------------
                                  The Quercus Trust, David Gelbaum, Co-Trustee
                                  of The Quercus Trust



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CUSIP No. 290846104

                                    EXHIBIT A

                AGREEMENT REGARDING JOINT FILING OF SCHEDULE 13D
                ------------------------------------------------



         The undersigned agree that the Schedule 13D with respect to the Common
Stock of EMCORE Corp. is a joint filing being made on their behalf.


Dated:  August 2, 2007            /s/ David Gelbaum
                                  ----------------------------------------------
                                  David Gelbaum, Co-Trustee of The Quercus Trust



                                  /s/ Monica Chavez Gelbaum
                                  ----------------------------------------------
                                  Monica Chavez Gelbaum, Co-Trustee of The
                                  Quercus Trust



                                  /s/ David Gelbaum
                                  ----------------------------------------------
                                  The Quercus Trust, David Gelbaum, Co-Trustee
                                  of The Quercus Trust

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