There seems to be a misunderstanding in your question. Crystals, which are ordered solid materials with regularly repeating internal structures, themselves remain unchanged when used in various laser designs. They do not typically cause modifications to the overall design of a laser. Therefore, there's no specific reason to expect an uncanny crystal to alter laser design. If you have more information or a different situation in mind, feel free to ask, and I'll do my best to provide clarifications or answers.