Nonlinear optics has numerous applications across various fields which leverage the unique interactions between high-intensity light and nonlinear materials. Fiber lasers, with their high power and stability, play a significant role in many of these applications. 

Here’s an example: In Four-Wave Mixing, fiber lasers are used to create high-power, multi-wavelength light, which enables the generation of new wavelengths and pulse shaping in optical fibers. MPBC's fiber lasers are particularly useful due to their high peak power, stable and continuous output, and excellent beam quality. 

In frequency conversion, second harmonic generation and third-harmonic generation techniques are used to generate light at different wavelengths for various applications, such as medical lasers, and industrial processes. Fiber lasers are commonly used as the fundamental light source in these frequency conversion processes. Their high power and stability make them ideal for efficient SHG and THG, especially in applications requiring high output power and precision.