1. Combine first 5 ingredients in a small saucepan, stirring with a whisk until smooth. Cook over medium heat 4 minutes or until slightly syrupy.
2. Heat a large grill pan over medium-high heat. Coat pan with cooking spray. Sprinkle chicken evenly with 1/4 teaspoon salt and pepper. Grill chicken 6 minutes on each side or until done. Spoon raspberry mixture over chicken.
3. Combine remaining 1/8 teaspoon salt, cucumber, and remaining ingredients in a medium bowl; toss to combine.