Optical Modes in VCSELs
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چکیده
Consider the typical VCSEL structure in Figure 1. In this example, the gain region consists of three quantum wells placed in a one-wavelength thick spacer region. On either side of the spacer region, there are extremely high reflectivity mirrors made from semiconductors that have total reflectivity greater than 99.5%. The mirrors are fabricated from altering material layers that are λ/4 thick to form a Distributed Bragg Reflector (DBR). Superimposed on the structure is a schematic of the electric field in the VCSEL.
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