An electrically-powered diode laser intended to provide noninvasive laser therapy [e.g., infrared phototherapy, low-level laser therapy (LLLT)] for localized treatment of musculoskeletal conditions (e.g., muscle pain, sports injury, rheumatism, disorders of the joints and soft/connective tissues), improvement of local blood/lymph circulation to facilitate healing/reduce swelling (e.g., lymphoedema therapy), or for non-needle acupuncture. It typically consists of a hand-held applicator designed for transcutaneous delivery of visible red/infrared laser light energy. It is intended to be operated by a patient/layperson in the home, typically under healthcare professional guidance.