Details

Autor(en) / Beteiligte

• Cheng, Feng-Min
• Jia, Zhi-Wei
• Zhang, Jin-Chuan
• Zhuo, Ning
• Zhai, Shen-Qiang
• Wang, Li-Jun
• Liu, Jun-Qi
• Liu, Shu-Man
• Liu, Feng-Qi
• Wang, Zhan-Guo

Titel

Stable single-mode operation of a distributed feedback quantum cascade laser integrated with a distributed Bragg reflector

Ist Teil von

• Photonics research (Washington, DC), 2017-08, Vol.5 (4), p.320-323

Erscheinungsjahr

2017

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We report an index-coupled distributed feedback quantum cascade laser by employing an equivalent phase shift(EPS) of quarter-wave integrated with a distributed Bragg reflector(DBR) at λ~5.03 μm. The EPS is fabricated through extending one sampling period by 50% in the center of a sampled Bragg grating. The key EPS and DBR pattern are fabricated by conventional holographic exposure combined with the optical photolithography technology, which leads to improved flexibility, repeatability, and cost-effectiveness. Stable single-mode emission can be obtained by changing the injection current or heat sink temperature even under the condition of large driving pulse width.