Notation for semiconductor alloy

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In the notation InxGa1-xAs, x represents the atomic fraction of indium, varying from 0 to 1. This indicates that indium and gallium can be substituted for each other in the compound without a fixed stoichiometry. The flexibility in the composition allows for a range of properties in the semiconductor alloy. The discussion confirms that the explanation provided clarifies the initial query. Understanding this notation is essential for discussing semiconductor materials.
sir_manning
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Hi - just a quick question on notation. Take, for example, InxGa1-xAs . What is x? Thanks.
 
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x is the atomic fraction of indium, which can be anything from 0 to 1. In another words, indium and gallium are interchangeable in this compound; there isn't a rigid stoichiometry. Does this answer your question?
 
Yes it does. Thanks.
 
Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

I am observing an irregular, aperiodic noise pattern in the reflection signal of a high-finesse optical cavity (finesse ≈ 20,000). The cavity is normally operated using a standard Pound–Drever–Hall (PDH) locking configuration, where an EOM provides phase modulation. The signals shown in the attached figures were recorded with the modulation turned off. Under these conditions, when scanning the laser frequency across a cavity resonance, I expected to observe a simple reflection dip. Instead...
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