Planar laser mount

• US 4,144,504 A
• Filed: 04/01/1977
• Issued: 03/13/1979
• Est. Priority Date: 05/11/1976
• Status: Expired due to Term

• Current Assignee: International Standard Electric Corporation (ITT, Inc.)
• Original Assignee: International Standard Electric Corporation (ITT, Inc.)
• Inventors: Epworth, Richard E., Leggett, Norman D.
• Primary Examiner(s): Miller, Jr., Stanley D.
• Assistant Examiner(s): Davie, James W.
• Application Number:
  US05/783,874
• Time in Patent Office: 711 Days
• Field of Search: 357/81, 357/74, 357/17, 357/18, 357/19, 357/75, 357/76, 357/68, 331/94.5 H, 331/94.5 P
• US Class Current: 372/36
• CPC Class Codes: G02B 6/3837 forwarding or threading methods of light guides into apertures of ferrule centering means
• CPC Class Codes: G02B 6/3843 with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity testing the alignment of axes, including eccentricity, G01B11/27
• CPC Class Codes: G02B 6/4202 for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
• CPC Class Codes: G02B 6/421 the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
• CPC Class Codes: G02B 6/4226 Positioning means for moving the elements into alignment, e.g. alignment screws, deformation of the mount
• CPC Class Codes: G02B 6/4238 Soldering
• CPC Class Codes: H01S 5/02208 characterised by the shape of the housings
• CPC Class Codes: H01S 5/0234 Up-side down mountings, e.g. Flip-chip, epi-side down mountings or junction down mountings
• CPC Class Codes: H01S 5/0237 by soldering

Abstract

An injection laser mount assembly comprises a housing having a front surface extending in a plane parallel with a rear surface. The front surface has a central recess from which a pillar extends for carrying a laser. Optical coupling can be made with the laser by converting the mount assembly to an optical fiber termination.

Claims

1. A laser device, comprising:

an electrically conductive housing having a flat rear surface and a flat front surface extending in a plane parallel with said rear surface;

a central recess formed in said front surface and being partially defined by a base surface;

a slot formed in a side of said housing and extending from the exterior thereof into said recess;

a window formed in said housing and extending from said base surface of said recess to said flat rear surface for providing an opening through said housing;

an electrically conductive pillar mounted within said recess on said base surface and having an upper surface thereof terminating approximate said plane of said housing front surface and having a second surface substantially normal to said housing rear surface and aligned with said window of said housing, said electrically conductive pillar being in electrical connection with said electrically conductive housing for providing a terminal connection for an injection laser;

an injection laser secured to said second surface of said pillar and positioned to have its laser axis aligned substantially normal to said housing rear surface and in alignment with said window;

a strip-line for providing another terminal connection for said laser, said strip-line secured in said slot and extending substantially parallel with said base surface from the exterior of said housing into said recess to a bend beyond which it extends substantially parallel with said second surface of said pillar to which said laser is secured; and

means for electrically connecting said strip-line to said laser.

2. A laser device as described in claim 1, wherein said strip-line is securely mounted to said base surface and to said second surface of said pillar.

3. A laser device as described in claim 2, additionally comprising insulative material disposed between said strip-line and said base surface and said second surface of said pillar.

4. A laser device as described in claim 1, wherein said strip-line is bifurcated at the end nearest said laser and an electrical connection is provided between each of the bifurcated ends of said strip-line and said laser.

5. A laser device as described in claim 1, wherein said pillar is formed of copper and said housing is formed of a material having a lower coefficient of expansion than that of said copper.

6. A laser device as described in claim 1, wherein said upper surface of said pillar is recessed with respect to said front surface of said housing.

7. A laser device as described in claim 1, wherein a portion of said strip-line extending through said slot in said housing is sealed to said housing by a glass frit.