Abstract: A laser processing apparatus includes: a stage 2 capable of levitating and transporting a substrate 3 by jetting gas from a front surface; a laser oscillator configured to irradiate a laser beam 20a onto the substrate 3; and a gas jetting port arranged at a position overlapping a focus point position of the laser beam 20a in plan view, and being configured to jet inert gas. The front surface of the stage 2 is constituted by upper structures 5a and 5b, and the upper structures 5a and 5b are arranged so as to be spaced apart from each other and face each other. A gap between the upper structures 5a and 5b overlaps the focus point position of the laser beam 20a in plan view. A filling member 8 is arranged between the upper structures 5a and 5b so as to fill the gap between the upper structures 5a and 5b.

Abstract: A laser irradiation apparatus (1) according to an embodiment includes an optical-system module (20) configured to apply laser light (L1) to an object to be irradiated, a shield plate (51) in which a slit (54) is formed, through which the laser light (L1) passes, and a reflected-light receiving component (61) disposed between the optical-system module (20) and the shield plate (51), in which the reflected-light receiving component (61) is able to receive, out of the laser light (L1), reflected light (R1) reflected by the shield plate (51).

Abstract: A laser processing apparatus includes: a stage 2 capable of levitating and transporting a substrate 3 by jetting gas from a front surface; a laser oscillator configured to irradiate a laser beam 20a onto the substrate 3; and a gas jetting port arranged at a position overlapping a focus point position of the laser beam 20a in plan view, and being configured to jet inert gas. The front surface of the stage 2 is constituted by upper structures 5a and 5b, and the upper structures 5a and 5b are arranged so as to be spaced apart from each other and face each other. A gap between the upper structures 5a and 5b overlaps the focus point position of the laser beam 20a in plan view. A filling member 8 is arranged between the upper structures 5a and 5b so as to fill the gap between the upper structures 5a and 5b.

Abstract: A laser irradiation apparatus (1) according to an embodiment includes an optical-system module (20) configured to apply laser light (L1) to an object to be irradiated, a shield plate (51) in which a slit (54) is formed, through which the laser light (L1) passes, and a reflected-light receiving component (61) disposed between the optical-system module (20) and the shield plate (51), in which the reflected-light receiving component (61) is able to receive, out of the laser light (L1), reflected light (R1) reflected by the shield plate (51).

Abstract: A laser irradiation apparatus (1) according to an embodiment includes an optical-system module (20) configured to apply laser light (L1) to an object to be irradiated, a shield plate (51) in which a slit (54) is formed, through which the laser light (L1) passes, and a reflected-light receiving component (61) disposed between the optical-system module (20) and the shield plate (51), in which the reflected-light receiving component (61) is able to receive, out of the laser light (L1), reflected light (R1) reflected by the shield plate (51).

Abstract: A laser irradiation apparatus (1) according to an embodiment includes an optical-system module (20) configured to apply laser light (L1) to an object to be irradiated, a shield plate (51) in which a slit (54) is formed, through which the laser light (L1) passes, and a reflected-light receiving component (61) disposed between the optical-system module (20) and the shield plate (51), in which the reflected-light receiving component (61) is able to receive, out of the laser light (L1), reflected light (R1) reflected by the shield plate (51).