| 摘要 |
Disclosed are a filter, a method for producing a filter, and a laser wavelength monitoring apparatus, where the filter includes: two translucent bodies, where each of the translucent bodies has a first plane, a second plane that forms a wedge angle with the first plane, and a third plane that intersects with both the first plane and the second plane, first planes of the two translucent bodies are parallel to each other, and second planes of the two translucent bodies are parallel to each other; a beam splitting film, where surfaces of both sides are respectively combined with the first planes of the two translucent bodies; and two reflective films, respectively combined with the second planes of the two translucent bodies. A wavelength monitoring optical path of the laser wavelength monitoring apparatus in the solutions is significantly shortened compared with that in the prior art, a volume of the laser wavelength monitoring apparatus is relatively small, and miniaturized packaging can be implemented, which significantly reduces packaging costs of a product. In addition, monitoring precision is relatively high. |
