A semiconductor laser apparatus includes a base, a block, and a semiconductor
laser
element. The base has a recess on a main plane thereof. The block is perpendicularly
elongating on the main plane. The block is neighboring the recess. The semiconductor
laser element is mounted on a side of the block. A first end of the semiconductor
element is located on outer side of the recess, and a second end of the semiconductor
element is located on inner side of the recess.
