Laser Diode Bar Driver

Intensify nx50 intensify is a stackable constant current laser diode bar driver delivering up to 50a cw current.

Laser diode bar driver.

1 produce constant regulated voltage. 3 laser diodes can directly convert electrical energy into light. You will find these in your dvd player bar code scanners pointers etc. Driven by voltage the doped p n transition allows for recombination of an electron with a hole.

A laser diode ld injection laser diode ild or diode laser is a semiconductor device similar to a light emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode s junction. These types of laser diodes produce an invisible beam at or around a wavelength of 780nm which is in the near infrared spectrum. Maximum output voltage of 5 0 v. This section responds to the control system section by driving current to the laser diode.

Sf6xxx series includes highly current laser driver sf6250 with output current up to 250a for laser diode bar and high current fiber coupled module and high voltage laser driver sf6100 with output voltage up to 40v which perfectly allows to operate with multiple singe emitters. Intensify nx50 accepts standard 12 v dc input voltage while output is adjustable from 0 to 50 a per nx50 device. For the driving of the laser diodes ld special drivers circuits are used. The second type is more easy to design and us.

See figure 7 for the area of the near infrared spectrum. A range of small laser diodes is used in laser pointers and bar code scanners. Laser diode current source. Electrically the different emitters are all connected in parallel.

The project has an onboard multi turn potentiometer to adjust the output current with great accuracy. It is advisable to turn the trim pot to zero. This means that the overall drive current to be delivered by the laser diode driver is substantial of the order of tens or even hundreds of amperes one obtains roughly 1 w of optical output power per 1 a of current. Shop 2 000.

However the most common laser diodes can be found in cd rom and cd players. 2 produce constant current driven through the ld load. They can work in two ways. Intensify nx50 has unique parallel connection capability to scale up continuous and pulsed output current rating to 200 a and beyond.

One key section of a laser diode driver is the adjustable current source it can also be known as the output stage. This circuit can drive diode starting from 0 ma to 115ma usually these cheap diodes require around 30ma current.