Browse Prior Art Database

Vacuum Compatible Laser Bar Cleaver

IP.com Disclosure Number: IPCOM000104867D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Gasser, M: AUTHOR [+2]

Abstract

Proposed is a tool and a procedure allowing mechanical cleavage of semiconductor laser mirrors with subsequent passivation in a vacuum environment. In contrast to standard procedures the mirror surfaces are not exposed to air prior to protection.

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Vacuum Compatible Laser Bar Cleaver

      Proposed is a tool and a procedure allowing mechanical cleavage
of semiconductor laser mirrors with subsequent passivation in a
vacuum environment.   In contrast to standard procedures the mirror
surfaces are not exposed to air prior to protection.

      Fig. 1 shows a sketch of the cleave assembly before cleaving is
performed.  The cell 1 is held with two clamps 2 and 2' on the two
flaps 3 and 3' of a hinge.  The cell 1 is adjusted such that the
scribe mark 4, defining the position of the cleave, is located at the
rotation axis of the hinge.  The cleave is performed by the hinging
movement as indicated by the arrows in Figure 1.  Upon completion of
this movement, the two freshly cleaved laser mirrors 5 and 5' form an
angle of 90 degrees to each other, as shown in Fig. 2, allowing the
deposition of the coating film with the help of suitable equipment.
In this way the front facet of one laser and the back facet of the
second laser are passivated simultaneously.

      The whole cleavage assembly has to be mounted on a  carrier
which allows introduction to and removal from the deposition system,
since the removal of the completed laser bar and the mechanical
adjustments are done at atmosphere.  By repeated application of this
"single cleave" technique, 100% of the cell material is cleaved and
coated.