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Lasere cu semiconductor Introducere. Laser Pointer. Laser inscriptor. Laser cu radia ţ ie pe o fa ţ et ă lateral ă Caracteristica de directivitate. VCSEL – Tunable Vertical Cavity Laser. Locul laserului in lantul de transmisie. La fel pentru un emitator cu LED.

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Laser cu radia ie pe o fa et lateral caracteristica de directivitate
Laser cu radiaţie pe o faţetă lateralăCaracteristica de directivitate

Vcsel tunable vertical cavity laser
VCSEL – Tunable Vertical Cavity Laser

Laser drivers

Laser Drivers

Circuite de comandă pentru Diode Laser

Disc drive electronica
Disc Drive – Electronica

No iuni fundamentale a a cum apar n pdfs foile de catalog ale laserelor
Noţiuni Fundamentale aşa cum Apar în PDFs ( foile de catalog ale laserelor )

  • high-speed modulation driver

  • biasing block with APC

  • CMOS control

  • steady bias current

  • APC ( Automatic Power Control) adjusts laser diode bias current

  • modulation current up to 80 mAs

  • high-speed differential pair switches

  • rise and fall times typically 50 ps

Un exemplu wld3343
Un exemplu : WLD3343


The WLD3343 is a general-purpose analog hybrid circuit

for use in ultrastable laser diode driver applications. The

WLD3343 maintains precision laser diode current (constant

current mode) or stable photodiode current (constant power

mode) regulation using electronics that are compatible with

any laser diode type. Supply up to 2 Amps of current to

your laser diode from a single +5 Volt power supply.

Connect two or more WLD3343 units together to

drive higher output currents.