JPS57190275A - Measurement for heat resistance of semi-conductor laser diode - Google Patents

Measurement for heat resistance of semi-conductor laser diode

Info

Publication number
JPS57190275A
JPS57190275A JP7591281A JP7591281A JPS57190275A JP S57190275 A JPS57190275 A JP S57190275A JP 7591281 A JP7591281 A JP 7591281A JP 7591281 A JP7591281 A JP 7591281A JP S57190275 A JPS57190275 A JP S57190275A
Authority
JP
Japan
Prior art keywords
light output
current
laser diode
temperature
measurement
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.)
Granted
Application number
JP7591281A
Other languages
Japanese (ja)
Other versions
JPS6139627B2 (en
Inventor
Nobuhiko Fujine
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 JP7591281A priority Critical patent/JPS57190275A/en
Publication of JPS57190275A publication Critical patent/JPS57190275A/en
Publication of JPS6139627B2 publication Critical patent/JPS6139627B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26—Testing of individual semiconductor devices
    • G01R31/2607—Circuits therefor
    • G01R31/2632—Circuits therefor for testing diodes
    • G01R31/2635—Testing light-emitting diodes, laser diodes or photodiodes

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

PURPOSE:To simplify the measurement by determining heat resistance from variation in the light output until the driving current of a semiconductor laser diode regains balance after it is changed. CONSTITUTION:A semiconductor laser diode is driven by a current I0 larger enough than initial threshold current Itho and the light output is L0 and balances at the temperature T0 at the joint. Then, when the current I0 is changed to I1 cascaded, the light output moves instantaneously to L0 on the L-I curve with respect to the temperature T0. Subsequently, according to changes in the joint temperature, the light output changes and attains balance at the current I1 (light output L1 and the joint temperature T1). Transient characteristics of the light output is observed to determine L'0 and DELTAL when L0 and I1/DELTAI are given. Thus, Rth is obtained by a specified calculation.
JP7591281A 1981-05-20 1981-05-20 Measurement for heat resistance of semi-conductor laser diode Granted JPS57190275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7591281A JPS57190275A (en) 1981-05-20 1981-05-20 Measurement for heat resistance of semi-conductor laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7591281A JPS57190275A (en) 1981-05-20 1981-05-20 Measurement for heat resistance of semi-conductor laser diode

Publications (2)

Publication Number Publication Date
JPS57190275A true JPS57190275A (en) 1982-11-22
JPS6139627B2 JPS6139627B2 (en) 1986-09-04

Family

ID=13590010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7591281A Granted JPS57190275A (en) 1981-05-20 1981-05-20 Measurement for heat resistance of semi-conductor laser diode

Country Status (1)

Country Link
JP (1) JPS57190275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5984343A (en) * 1982-11-08 1984-05-16 Konishiroku Photo Ind Co Ltd Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5984343A (en) * 1982-11-08 1984-05-16 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPH0481263B2 (en) * 1982-11-08 1992-12-22 Konishiroku Photo Ind

Also Published As

Publication number Publication date
JPS6139627B2 (en) 1986-09-04

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