For optimum flavor, place salmon, teriyaki sauce, and ginger in a re-sealable zipper plastic bag overnight to marinade. This step is optional.
Preheat oven to 350°F.
If you have not marinated your salmon overnight, rub the flesh with teriyaki sauce and ginger, then place fillet skin side down on a lined baking sheet. Sprinkle with ¼ teaspoon salt, pepper, and lay lemon slices over the top. Then, set aside.
In a mixing bowl, toss green beans with sesame oil, remaining salt, and sesame seeds. Add green beans to baking sheet surrounding the salmon. Bake on the center rack for 20 minutes or until salmon pulls apart easily with a fork.