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WO2003044909A3 - System for optical power control - Google Patents

System for optical power control Download PDF

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Publication number
WO2003044909A3
WO2003044909A3 PCT/US2002/037453 US0237453W WO03044909A3 WO 2003044909 A3 WO2003044909 A3 WO 2003044909A3 US 0237453 W US0237453 W US 0237453W WO 03044909 A3 WO03044909 A3 WO 03044909A3
Authority
WO
WIPO (PCT)
Prior art keywords
output
summing junction
feedback loop
coupled
pump source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2002/037453
Other languages
French (fr)
Other versions
WO2003044909A2 (en
Inventor
Kevin Holsinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Newport Corp USA
Original Assignee
Spectra Physics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spectra Physics Inc filed Critical Spectra Physics Inc
Priority to AU2002352859A priority Critical patent/AU2002352859A1/en
Publication of WO2003044909A2 publication Critical patent/WO2003044909A2/en
Publication of WO2003044909A3 publication Critical patent/WO2003044909A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1312—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094038—End pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

A laser system includes a pump source (2) that produces a first output (4). The pump source has a feedback loop (21) with a first summing junction (25) and a first command that has step quantization or digitized set point (3). An output device (8) is coupled to the pump source (2) to receive the first output (4) and produce a second output (20). A feedback loop is coupled to the first summing junction. The feedback loop includes a second summing junction (24) coupled to at least a portion of the second output (20). The second summing junction (24) receives a second command and provides an input to the first summing junction (25). The feedback loop reduces the step quantization from the first output (4) to provide finer control step of a property of the second output (20).
PCT/US2002/037453 2001-11-20 2002-11-20 System for optical power control Ceased WO2003044909A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002352859A AU2002352859A1 (en) 2001-11-20 2002-11-20 System for optical power control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33196701P 2001-11-20 2001-11-20
US60/331,967 2001-11-20

Publications (2)

Publication Number Publication Date
WO2003044909A2 WO2003044909A2 (en) 2003-05-30
WO2003044909A3 true WO2003044909A3 (en) 2003-09-18

Family

ID=23296118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/037453 Ceased WO2003044909A2 (en) 2001-11-20 2002-11-20 System for optical power control

Country Status (2)

Country Link
AU (1) AU2002352859A1 (en)
WO (1) WO2003044909A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495362A (en) * 1994-04-13 1996-02-27 Ando Electric Co., Ltd. Photoperiodic circuit amplification control apparatus
US5680246A (en) * 1994-05-20 1997-10-21 Fujitsu Limited Optical amplifier and optical transmission apparatus
WO1999045612A1 (en) * 1998-03-05 1999-09-10 Laser Power Corporation Coupled cavity laser source for telecommunications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495362A (en) * 1994-04-13 1996-02-27 Ando Electric Co., Ltd. Photoperiodic circuit amplification control apparatus
US5680246A (en) * 1994-05-20 1997-10-21 Fujitsu Limited Optical amplifier and optical transmission apparatus
WO1999045612A1 (en) * 1998-03-05 1999-09-10 Laser Power Corporation Coupled cavity laser source for telecommunications

Also Published As

Publication number Publication date
AU2002352859A1 (en) 2003-06-10
WO2003044909A2 (en) 2003-05-30
AU2002352859A8 (en) 2003-06-10

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