Patent US5267253A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5267253A Expired / Lapsed US ⏱️ 0.0 years remaining

Pulsed laser

Assignee: Mitsubishi Electric Corp
•
Filing: 1992-05-27
•
Granted: 1993-11-30
•
Expires: 2012-05-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A pulsed laser according to the present invention comprises a charge terminal, mutually-opposing first and second main discharge electrodes, a pulse generation capacitor connected between the first main electrode and the charge terminal, a plurality of peaking capacitors connected in parallel between the first and second main discharge electrodes, and a plurality of diodes connected in parallel with the plurality of peaking capacitors and oriented to suppress reverse-bias components of main discharge current flowing between the first and second main discharge electrodes. Thereby, reverse current flowing between the first and second main discharge electrodes can be minimized without sacrificing laser oscillation efficiency.

Inventors

  • 👤 Hajime Nakatani

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:29
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/09; H01S3/097; H01S3/0971

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 60 words
A pulsed laser comprising: mutually-opposing first and second main discharge electrodes; a plurality of peaking capacitors connected in parallel between said first and second main discharge electrodes; and a plurality of diodes connected in parallel with said plurality of peaking capacitors and oriented to suppress reverse-bias components of main discharge current flowing between said first and second main discharge electrodes.
Claim 2
Dependent Claim 60 words
A pulsed laser comprising: mutually-opposing first and second main discharge electrodes; a plurality of peaking capacitors connected in parallel between said first and second main discharge electrodes; and a plurality of diodes connected in parallel with said plurality of peaking capacitors and oriented to suppress reverse-bias components of main discharge current flowing between said first and second main discharge electrodes.
Claim 3
Dependent Claim 44 words
A pulsed laser according to claim 1 wherein each of said first and second main discharge electrodes has a rod-like shape extending unidirectionally, and said plurality of peaking capacitors are arranged sporadically in the longitudinal directions of said first and second main discharge electrodes.
Claim 4
Dependent Claim 27 words
A pulsed laser according to claim 2 wherein said plurality of diodes are arranged sporadically in the longitudinal directions of said first and second main discharge electrodes.
Claim 5
Dependent Claim 33 words
A pulsed laser according to claim 1 further comprising a series combination of a pulse generating capacitor and a switch, said series combination being connected between said first and second main discharge electrodes.
Claim 6
Dependent Claim 31 words
A pulsed laser according to claim 4 wherein said plurality of diode are connected not to conduct charging currents of said plurality of peaking capacitors after said switch is turned on.
Claim 7
Dependent Claim 21 words
A pulsed laser according to claim 1 further comprising a plurality of resistors connected in series with said plurality of diodes.
Claim 8
Dependent Claim 64 words
A pulsed laser, comprising: mutually-opposing first and second main discharge electrodes; a saturable reactor connected to said first main discharge electrode at one end for suppressing reverse-bias components of main discharge current flowing between said first and second main discharge electrodes; and a plurality of peaking capacitors connected in parallel between an other end of said saturable reactor and said second main discharge electrode.
Claim 9
Dependent Claim 64 words
A pulsed laser, comprising: mutually-opposing first and second main discharge electrodes; a saturable reactor connected to said first main discharge electrode at one end for suppressing reverse-bias components of main discharge current flowing between said first and second main discharge electrodes; and a plurality of peaking capacitors connected in parallel between an other end of said saturable reactor and said second main discharge electrode.
Claim 10
Dependent Claim 44 words
A pulsed laser according to claim 7 wherein each of said first and second main discharge electrodes has a rod-like shape extending unidirectionally, and said plurality of peaking capacitors are arranged sporadically in the longitudinal directions of said first and second main discharge electrodes.
Claim 11
Dependent Claim 27 words
A pulsed laser according to claim 8 wherein said plurality of diodes are arranged sporadically in the longitudinal directions of said first and second main discharge electrodes.
Claim 12
Dependent Claim 33 words
A pulsed laser according to claim 7 further comprising a series combination of a pulse generating capacitor and a switch, said series combination being connected between said first and second main discharge electrodes.
Claim 13
Dependent Claim 27 words
A pulsed laser according to claim 7 further comprising a stabilization circuit element connected between said first and second main discharge electrodes for stabilizing said saturable reactor.
Claim 14
Dependent Claim 15 words
A pulsed laser according to claim 11 wherein said stabilization circuit element is a resistor.
Claim 15
Dependent Claim 15 words
A pulsed laser according to claim 11 wherein said stabilization circuit element is a capacitor.
Claim 16
Dependent Claim 15 words
A pulsed laser according to claim 11 wherein said stabilization circuit element is a reactor.
Claim 17
Dependent Claim 31 words
A pulsed laser according to claim 7 wherein said saturable reactor includes a conductor plate connected to said first main discharge electrode and a running track-shaped core surrounding said conductor plate.
Claim 18
Dependent Claim 25 words
A pulsed laser according to claim 15 wherein said core has a multi-ply structure made by winding amorphous tape in the form of a ring.
Claim 19
Dependent Claim 20 words
A pulsed laser according to claim 15 wherein said core is made by combining a plurality of divided ferrite cores.
Claim 20
Dependent Claim 37 words
A pulsed laser according to claim 7 wherein said saturable reactor includes a plurality of conductor bars each connected to said first main discharge electrode and a plurality of ring ferrite cores surrounding their corresponding conductor bars.
Claim 21
Dependent Claim 39 words
A pulsed laser according to claim 7 further comprising a plurality of diodes connected in parallel with said plurality of peaking capacitors for suppressing reverse-bias components of main discharge current flowing between said first and second main discharge electrodes.
Claim 22
Dependent Claim 27 words
A pulsed laser according to claim 19 wherein said plurality of diodes are arranged sporadically in the longitudinal directions of said first and second main discharge electrodes.
Claim 23
Dependent Claim 56 words
A pulsed laser according to claim 19 further comprising a series combination of a pulse generating capacitor and a switch, said series combination being connected between said first and second main discharge electrodes, said plurality of diodes being connected not to conduct charging currents of said plurality of peaking capacitors after said switch is turned on.
Claim 24
Dependent Claim 21 words
A pulsed laser according to claim 19 further comprising a plurality of resistors connected in series with said plurality of diodes.

References Cited (Backward Citations)

US4722091A Cited
US5138622A Cited
US4975921A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-11-29 1997-05-31 1997-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-11-29 2001-05-31 2001-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-11-29 2005-05-31 2005-11-30 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag