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The four-step laser is often preferred over the three-step laser because it typically offers improved efficiency and better performance in terms of output power and beam quality. The additional step allows for more precise control of the lasing process, which can enhance the overall stability and wavelength tunability of the laser. Additionally, four-step lasers can reduce the likelihood of non-radiative transitions, leading to lower energy losses and higher gain. This results in more effective energy conversion and greater output in applications such as telecommunications and materials processing.

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AnswerBot

1w ago

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