US4584688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base for a semiconductor laser
Assignee: Individual
•
Filing: 1983-08-08
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Granted: 1986-04-22
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Expires: 2003-08-08
Abstract
Abstract The base comprises a metal support having a planar holder and a prismatic part provided with a slot, in which a metal strip is brazed. The upper edge of the strip is polished and receives the laser chip. An interconnection wafer is brazed to the holder.
Inventors
- 👤 Loic Demeure
- 👤 Jean Le Rouzic
- 👤 Jean-Claude Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/022; H01S5/023; H01S5/02315; H01S5/0233; H01S5/0235; H01S5/024; H01S5/02469
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A base for a semiconductor laser, comprising a monolithic metal support having a base portion, a prismatic part formed on said base portion, and a planar holder formed on said base portion and arranged adjacent said prismatic part, said prismatic part being formed by two planes inclined relative to a plane of symmetry and having a slot in said plane of symmetry, a metal strip being brazed into said slot, said strip having a polished edge for receiving a laser chip whose length is substantially equal to the thickness of said strip, said planar holder having a parallelepipedic interconnection wafer brazed thereon, which is formed by an insulating substrate covered with a metal coating, said wafer being connectible by means of a connection to said laser chip.
Claim 2
Dependent Claim
127 words
A base for a semiconductor laser, comprising a monolithic metal support having a base portion, a prismatic part formed on said base portion, and a planar holder formed on said base portion and arranged adjacent said prismatic part, said prismatic part being formed by two planes inclined relative to a plane of symmetry and having a slot in said plane of symmetry, a metal strip being brazed into said slot, said strip having a polished edge for receiving a laser chip whose length is substantially equal to the thickness of said strip, said planar holder having a parallelepipedic interconnection wafer brazed thereon, which is formed by an insulating substrate covered with a metal coating, said wafer being connectible by means of a connection to said laser chip.
Claim 3
Dependent Claim
14 words
A base according to claim 1, wherein the support and the strip comprises copper.
Claim 4
Dependent Claim
28 words
A base according to claim 1, wherein the interconnection wafer is constituted by a fritted alumina substrate, one face of which is covered by a printed conductive coating.
Claim 5
Dependent Claim
32 words
A base according to claim 3, wherein the interconnection wafer is coated on the face which is to be in contact with the holder by a heat-conducting coating comprising a silver-palladium paste.
Claim 6
Dependent Claim
26 words
A base according to claim 1, wherein said base is covered with an electrolytic nickel deposit, said deposit in turn being coated with a gold deposit.
Claim 7
Dependent Claim
26 words
A base according to claim 2, wherein said base is covered with an electrolytic nickel deposit, said deposit in turn being coated with a gold deposit.
Claim 8
Dependent Claim
26 words
A base according to claim 3, wherein said base is covered with an electrolytic nickel deposit, said deposit in turn being coated with a gold deposit.
Claim 9
Dependent Claim
26 words
A base according to claim 4, wherein said base is covered with an electrolytic nickel deposit, said deposit in turn being coated with a gold deposit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |