JPS5791578A - Optical device - Google Patents

Optical device

Info

Publication number
JPS5791578A
JPS5791578A JP16750580A JP16750580A JPS5791578A JP S5791578 A JPS5791578 A JP S5791578A JP 16750580 A JP16750580 A JP 16750580A JP 16750580 A JP16750580 A JP 16750580A JP S5791578 A JPS5791578 A JP S5791578A
Authority
JP
Japan
Prior art keywords
semiconductor laser
beam diameter
prism
light beam
emitted
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
JP16750580A
Other languages
Japanese (ja)
Inventor
Fumitaka Abe
Tadashi Matsuda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16750580A priority Critical patent/JPS5791578A/en
Publication of JPS5791578A publication Critical patent/JPS5791578A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0972—Prisms
    • 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping

Landscapes

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

Abstract

PURPOSE:To increase the transmission efficiency of a light beam by a method wherein the incidence angle of a semiconductor laser beam is formed as Brewster angle and the end surface of a prism is arranged to extend a beam diameter in the parallel direction to the P-N junction surface of the semiconductor laser. CONSTITUTION:A light beam L1 with a beam diameter of d1 emitted from a semiconductor laser 1 receives refractive (diffractive) action with refraction angle theta2 at a prism 4 and is produced as a light beam L2 with a beam diameter of d2. In the beam diameter d2, the ratio of air refractive index n1, and prism 4 refractive index n2, n2/n1, is selected higher than 1 and the beam diameter d2 can be made equal to a desired value, namely, the junction surface P of the light beam L1 emitted from the semiconductor laser 1, the beam diameter d0 in the vertical direction by properly setting the ratio. In this way, shaping to the light beam L1 emitted from the semiconductor laser 1 can be performed by one prism.
JP16750580A 1980-11-28 1980-11-28 Optical device Pending JPS5791578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16750580A JPS5791578A (en) 1980-11-28 1980-11-28 Optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16750580A JPS5791578A (en) 1980-11-28 1980-11-28 Optical device

Publications (1)

Publication Number Publication Date
JPS5791578A true JPS5791578A (en) 1982-06-07

Family

ID=15850921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16750580A Pending JPS5791578A (en) 1980-11-28 1980-11-28 Optical device

Country Status (1)

Country Link
JP (1) JPS5791578A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01121824A (en) * 1987-11-05 1989-05-15 Hamamatsu Photonics Kk Optical element
WO2008119363A1 (en) * 2007-04-02 2008-10-09 Pirelli & C. S.P.A. External cavity laser module comprising a multi-functional optical element
WO2016148020A1 (en) * 2015-03-17 2016-09-22 カナレ電気株式会社 Semiconductor laser and semiconductor laser light source module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01121824A (en) * 1987-11-05 1989-05-15 Hamamatsu Photonics Kk Optical element
WO2008119363A1 (en) * 2007-04-02 2008-10-09 Pirelli & C. S.P.A. External cavity laser module comprising a multi-functional optical element
WO2016148020A1 (en) * 2015-03-17 2016-09-22 カナレ電気株式会社 Semiconductor laser and semiconductor laser light source module

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