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JPS57131024A - Measuring device for laser energy - Google Patents

Measuring device for laser energy

Info

Publication number
JPS57131024A
JPS57131024A JP1644381A JP1644381A JPS57131024A JP S57131024 A JPS57131024 A JP S57131024A JP 1644381 A JP1644381 A JP 1644381A JP 1644381 A JP1644381 A JP 1644381A JP S57131024 A JPS57131024 A JP S57131024A
Authority
JP
Japan
Prior art keywords
laser light
light
converted
wave length
secondary harmonic
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.)
Pending
Application number
JP1644381A
Other languages
Japanese (ja)
Inventor
Hiroshi Imoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1644381A priority Critical patent/JPS57131024A/en
Publication of JPS57131024A publication Critical patent/JPS57131024A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Lasers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To separate laser light from natural radiating light and to enable to perform a simultaneous and independent measurement of said lights, by a method wherein a secondary harmonic generator is situated at a focusing point, and wave length of only laser light is converted. CONSTITUTION:Light, reflected by a beam slitter or a polarizing devide 1, is focused by a focusing lens 2 to form a focus in a secondary harmonic generator 5, a wave length of only laser light, having a high power level, of input lights is converted. Laser light, whose wave length is converted, and amplified natural radiating light are parallel again by a concave lens 6. Beam reflected by a beam splitter 7 passes through a basic wave cutting-off filter 8, and only laser light is measured by a photo detector 3. Meanwhile, beam, transmitting through the beam splitter 7, passes through a secondary harmonic cutting-off filter 9, and amplified natural radiating light is measured by a photo diode 10.
JP1644381A 1981-02-06 1981-02-06 Measuring device for laser energy Pending JPS57131024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1644381A JPS57131024A (en) 1981-02-06 1981-02-06 Measuring device for laser energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1644381A JPS57131024A (en) 1981-02-06 1981-02-06 Measuring device for laser energy

Publications (1)

Publication Number Publication Date
JPS57131024A true JPS57131024A (en) 1982-08-13

Family

ID=11916374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1644381A Pending JPS57131024A (en) 1981-02-06 1981-02-06 Measuring device for laser energy

Country Status (1)

Country Link
JP (1) JPS57131024A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05340809A (en) * 1992-06-05 1993-12-24 Shibuya Kogyo Co Ltd Device for detecting output of laser beam
FR2758392A1 (en) * 1997-01-16 1998-07-17 Nec Corp MONITORING APPARATUS FOR OPTICAL FIBER AMPLIFIER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05340809A (en) * 1992-06-05 1993-12-24 Shibuya Kogyo Co Ltd Device for detecting output of laser beam
FR2758392A1 (en) * 1997-01-16 1998-07-17 Nec Corp MONITORING APPARATUS FOR OPTICAL FIBER AMPLIFIER

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