A laser resonator comprising: a cavity bounded by an end mirror and output coupler; one or more gain media between the end mirror and output coupler; one or more fold mirrors between the end mirror and output coupler, the one or more fold mirrors being configured to rotate to correct lower spatial frequency error such as astigmatism and trefoil within the cavity; one or more statically-actuated mirrors between the end mirror and output coupler, the one or more statically-actuated mirrors being configured to correct residual lower spatial frequency error such as astigmatism and trefoil within the cavity wherein one of the one or more statically-actuated mirrors comprises: a controllable-profile faceplate whose front surface is optically finished into a reflective surface; a faceplate mount wherein a back surface of the faceplate is secured to a backplate via the faceplate mount; and an array of static actuators each of which extends through the backplate and exerts a selectable, localized force to the back surface of the faceplate to collectively control the profile of the faceplate and its front surface, wherein each of the static actuators is an adjustable element which exerts a selectable, localized push-pull force on the faceplate; and a modal corrector mirror between the end mirror and output coupler, the one or more fold mirrors and the one or more statically-actuated mirrors being separate from the modal corrector mirror, the modal corrector mirror being configured to correct residual relatively higher spatial frequency error within the cavity, and the modal corrector mirror comprising: a controllable-profile faceplate including an optically-treated front surface; and an array of static actuators each of which comprises: an adjustable element; and a compliant mechanism located between the adjustable element and faceplate, the adjustable element is configured to exert a selectable, localized push-pull force on the faceplate via the compliant mechanism, and the compliant mechanism is configured to scale the respective force. a cavity bounded by an end mirror and output coupler; one or more gain media between the end mirror and output coupler; one or more fold mirrors between the end mirror and output coupler, the one or more fold mirrors being configured to rotate to correct lower spatial frequency error such as astigmatism and trefoil within the cavity; one or more statically-actuated mirrors between the end mirror and output coupler, the one or more statically-actuated mirrors being configured to correct residual lower spatial frequency error such as astigmatism and trefoil within the cavity wherein one of the one or more statically-actuated mirrors comprises: a controllable-profile faceplate whose front surface is optically finished into a reflective surface; a faceplate mount wherein a back surface of the faceplate is secured to a backplate via the faceplate mount; and an array of static actuators each of which extends through the backplate and exerts a selectable, localized force to the back surface of the faceplate to collectively control the profile of the faceplate and its front surface, wherein each of the static actuators is an adjustable element which exerts a selectable, localized push-pull force on the faceplate; and a controllable-profile faceplate whose front surface is optically finished into a reflective surface; a faceplate mount wherein a back surface of the faceplate is secured to a backplate via the faceplate mount; and an array of static actuators each of which extends through the backplate and exerts a selectable, localized force to the back surface of the faceplate to collectively control the profile of the faceplate and its front surface, wherein each of the static actuators is an adjustable element which exerts a selectable, localized push-pull force on the faceplate; and a modal corrector mirror between the end mirror and output coupler, the one or more fold mirrors and the one or more statically-actuated mirrors being separate from the modal corrector mirror, the modal corrector mirror being configured to correct residual relatively higher spatial frequency error within the cavity, and the modal corrector mirror comprising: a controllable-profile faceplate including an optically-treated front surface; and an array of static actuators each of which comprises: an adjustable element; and a compliant mechanism located between the adjustable element and faceplate, the adjustable element is configured to exert a selectable, localized push-pull force on the faceplate via the compliant mechanism, and the compliant mechanism is configured to scale the respective force. a controllable-profile faceplate including an optically-treated front surface; and an array of static actuators each of which comprises: an adjustable element; and a compliant mechanism located between the adjustable element and faceplate, the adjustable element is configured to exert a selectable, localized push-pull force on the faceplate via the compliant mechanism, and the compliant mechanism is configured to scale the respective force. an adjustable element; and a compliant mechanism located between the adjustable element and faceplate, the adjustable element is configured to exert a selectable, localized push-pull force on the faceplate via the compliant mechanism, and the compliant mechanism is configured to scale the respective force.