Method of manufacturing heterogeneous material joined body

A method for manufacturing a heterogeneous material-containing joined body, wherein the method comprises:

• irradiating a surface of a glass layer with a first laser having a wavelength of 200 to 400 nm to form two or more etched lines on the surface of the glass layer, wherein a pitch of the two or more etched lines is 50 μm or more and 1,200 μm or less;
• providing a resin layer on the surface of the glass layer having the two or more etched lines;
• and
• irradiating the surface of the glass layer with the resin layer with a second laser to fill the etched lines and the surface of the glass layer with the resin layer and join the resin layer and the glass layer,
• wherein light transmissivity, at a wavelength of 1,064 nm, of the glass layer having the two or more etched lines is 40% or more and 98% or less, and
• wherein the glass layer having the two or more etched lines is irradiated with the second laser in a direction from the glass layer to the resin layer with focus on the surface of the glass layer which is in contact with the resin layer.