| 摘要 |
<p>There is disclosed an improved semiconductor laser device (10; 10a), e.g. a single mode index guided laser diode. The device (10; 10a) comprises: an optical waveguide (15; 15a); at least one electrical contact (20; 20a) extending along part of a length of the waveguide (15; 15a); and wherein the at least one electrical contact (20; 20a) is shorter than the optical waveguide (15; 15a). By this arrangement a part of parts of the waveguide (15; 15a) are not electrically pumped, in use.</p> |
