Other Multiple-pulse Techniques
Transient spectroscopy as discussed above is a technique that involves two pulses. There are many more techniques that employ two or more pulses, such as:
- Photon echoes.
- Four-wave mixing (involves three laser pulses)
The interpretation of experimental data from these techniques is usually much more complicated than in transient-absorption spectroscopy.
Nuclear magnetic resonance and electron spin resonance are often implemented with multiple-pulse techniques, though with radio waves and micro waves instead of visible light.
Read more about this topic: Time-resolved Spectroscopy
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