Laser Diode

Laser Diode

The purpose of this laser diode tutorial is to provide the information necessary to create a long lifetime, stable laser diode system. Much of what will be discussed will be in general terms of laser diode performance, warnings, and tips. Much of the specifics are left to the user as any system can vary significantly from lab to lab or application to application. However, the guidelines and tips outlined in this tutorial will supply the information necessary to plan a proper system that will supply stable operation over long diode lifetimes.

The general strategy in constructing a laser diode system is similar for all such systems. Application is going to define the major parameters of a laser diode: wavelength, power, and package style. Once known, the next set of choices revolves around mounting a laser diode and choosing the appropriate drivers, regulators, and choosing the placement of the diode within the lab. As we will see through this tutorial, there are many things to keep in mind when planning out a laser diode system. It may seem daunting at first and riddled with considerations that may not have seemed important. But through proper planning, handling, equipment, and precaution a laser diode can supply stable, consistent performance for 100,000’s of operating hours.

Laser Diode Types
This tab takes us through an introduction to the various types of semiconductor diode lasers. Background information on the semiconductor structure, lasing type, integrated feedback, etc. is laid out here. In most applications laser type will be decided by application, and as such this tab provides a general background about diodes and serves as information for the interested reader.

LD Guide
In the LD Guide tab, we will walkthrough an overview of the major considerations and warnings involved with handling and operating laser diodes. Damage mechanisms are introduced and common methods and tips on how to avoid damaging your laser through these mechanisms are laid out. Other helpful tips such as the important parameters listed in a specs table and diode packages are discussed. Furthermore, we introduce some of the basics for laser diode mounts and drivers, including desired and necessary features of a proper laser diode controller

Mounting LDs
We present here a more in depth look at mounting laser diodes. What type of mounts are really necessary, which ones are desired, what you'd like to look for in a mount, etc. Mounting lasers doesn't end at the diode mount itself, and thus this tab also discusses common tips and practices when planning out your laboratory environment for optimal placement of diode systems. The life of a laser diode can be fraught with danger, and where you place it on your table can affect the risk of catastrophic failure to the diode.