Place the sliced cucumbers in a colander and toss them with the 1/2 tablespoon of kosher salt. Let the cucumbers sit in the colander in the sink for 15-30 minutes then rinse them off and pat them dry with paper towels.
Place the cucumbers into a large bowl. In a small bowl whisk together all of the vinaigrette ingredients then pour the dressing over the cucumbers and stir everything together.
Top the salad with the toasted sesame seeds and green onion. Cover and refrigerate until ready to serve.