Rami Arieli: "The Laser Adventure" Chapter 6.3 Diode lasers Page 13a
Different Structures of Diode Lasers
A common construction now is a narrow stripe of the active layer (Stripe Geometry), confined on all sides (the sides as well as on top and bottom) with another material. This family of diode lasers is called Index Guided Lasers.
Examples of different laser structures for confining the laser light to a specific region are shown in figure 6.28.
Figure 6.28: Examples of different laser structures for confining the laser light to a specific region.