Polarization-stable single-mode 795â
nm grating-coupled surface-emitting laser for quantum sensing.
Opt Express
; 31(25): 42562-42570, 2023 Dec 04.
Article
in En
| MEDLINE
| ID: mdl-38087627
ABSTRACT
We demonstrate a polarization-stable and single-mode grating-coupled surface-emitting laser (GCSEL) with high side-mode suppression ratio (SMSR) of â¼40â
dB and orthogonal polarization suppression ratio (OPSR) of â¼25â
dB around 795â
nm. The fabricated devices have low threshold current of â¼4.8â
mA and low electrical resistance of 53 Ω at 25 °C. Meanwhile, a low thermal resistance of â¼1â
K/mW is achieved, which is comparable with that of the record of ever reported for vertical-cavity surface-emitting lasers (VCSELs). The far-field divergence angle of surface-emitting beam is â¼14.5°x14.7° at an injection current of 12â
mA indicating a relatively good beam quality. Our results open what we believe is a new way to produce polarization-stable single-mode surface-emitting lasers with simple fabrication process. While the GCSEL is specifically designed for quantum sensing applications such as atomic clocks, magnetometers, and gyroscope, its performance in terms of low-power consumption, low thermal resistance, good beam qualities, and wafer-level testing are of particular interest for a wide range of applications.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2023
Document type:
Article