JPS54142995A - Laser unit - Google Patents

Laser unit

Info

Publication number
JPS54142995A
JPS54142995A JP5007878A JP5007878A JPS54142995A JP S54142995 A JPS54142995 A JP S54142995A JP 5007878 A JP5007878 A JP 5007878A JP 5007878 A JP5007878 A JP 5007878A JP S54142995 A JPS54142995 A JP S54142995A
Authority
JP
Japan
Prior art keywords
lamp
power supply
voltage
current
excitation
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
JP5007878A
Other languages
Japanese (ja)
Inventor
Masatoshi Kawada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5007878A priority Critical patent/JPS54142995A/en
Publication of JPS54142995A publication Critical patent/JPS54142995A/en
Pending 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H01S3/092—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp

Landscapes

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

Abstract

PURPOSE:To simplify the maintenance of a laser unit by flowing a fine current independently while a main current for excitation is not flowed to an excitation lamp, by detecting a voltage across the lamp and then by judging the deterioration of the lamp on the basis of the detected voltage. CONSTITUTION:The laser unit is composed of excitation lamp 11, the lst power supply 12 supplying a main current to the lamp, diode 15 prevents a reverse current from the 2nd power supply 13 provided afterwards, trigger circuit 17 controlling power supply 12, and oscillator 16, and lamp 16 is lighted at the oscillation period of oscillator 16 to irradiate a laser medium not shown in the figure. In the above constitution, the 2nd power supply 13 flowing a fine current is connected to lamp 11 via reverse-current preventive diode 15' and voltage detecting resistance 11, and a voltage developed across resistance 14 is detected by voltage detector 18 and then compared with a reference voltage by comparator 19. Namely, the output of comparator 19 is applied to alarm circuit 22 while the main current from the 1st power supply 12 to lamp 11 is previously cut off by circuits 21 and 20.
JP5007878A 1978-04-28 1978-04-28 Laser unit Pending JPS54142995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5007878A JPS54142995A (en) 1978-04-28 1978-04-28 Laser unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5007878A JPS54142995A (en) 1978-04-28 1978-04-28 Laser unit

Publications (1)

Publication Number Publication Date
JPS54142995A true JPS54142995A (en) 1979-11-07

Family

ID=12848964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5007878A Pending JPS54142995A (en) 1978-04-28 1978-04-28 Laser unit

Country Status (1)

Country Link
JP (1) JPS54142995A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829530A (en) * 1986-04-15 1989-05-09 Nec Corporation Apparatus of controlling a laser device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829530A (en) * 1986-04-15 1989-05-09 Nec Corporation Apparatus of controlling a laser device

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