TY - JOUR
T1 - Active distributed reflector lasers phase adjusted by groove region
AU - Koentjoro, Sekartedjo
AU - Broberg, Björn
AU - Koyama, Fumio
AU - Furuya, Kazuhito
AU - Suematsu, Yasuharu
PY - 1984/10
Y1 - 1984/10
N2 - Active distributed reflector lasers, where the phase adjustment is accomplished by a groove in the middle part of the cavity, are proposed. Design considerations for the groove are given. Phase adjusted lasers emitting at 1.5 μm were fabricated using mass transport technique. CW operation at room temperature was achieved and single longitudinal mode spectra were observed. Below-threshold spectra show that the mode degeneracy of conventional DFB lasers is avoided, which indicates that lasing occurs almost at the Bragg wavelength.
AB - Active distributed reflector lasers, where the phase adjustment is accomplished by a groove in the middle part of the cavity, are proposed. Design considerations for the groove are given. Phase adjusted lasers emitting at 1.5 μm were fabricated using mass transport technique. CW operation at room temperature was achieved and single longitudinal mode spectra were observed. Below-threshold spectra show that the mode degeneracy of conventional DFB lasers is avoided, which indicates that lasing occurs almost at the Bragg wavelength.
UR - http://www.scopus.com/inward/record.url?scp=0021502090&partnerID=8YFLogxK
U2 - 10.1143/JJAP.23.L791
DO - 10.1143/JJAP.23.L791
M3 - Article
AN - SCOPUS:0021502090
SN - 0021-4922
VL - 23
SP - L791-L794
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 10
ER -