Self‐Injection Locked Frequency Conversion Laser
Abstract
High‐coherence visible and near‐visible laser sources are centrally important to the operation of advanced position/navigation/timing systems as well as classical/quantum sensing systems. However, the complexity and size of these bench‐top lasers are an impediment to their transition beyond the laboratory. Here, a system‐on‐chip that emits high‐coherence near‐visible lightwaves is demonstrated. The devices rely upon a new approach wherein wavelength conversion and coherence increase by self‐injection locking are combined within a single nonlinear resonator. This simplified approach is demonstrated in a hybridly‐integrated device and provides a short‐term linewidth of around 4.7 kHz (10 kHz before filtering). On‐chip converted optical power over 2 mW is also obtained. Moreover, measurements show that heterogeneous integration can result in a conversion efficiency higher than 25% with an output power over 11 mW. Because the approach uses mature III–V pump lasers in combination with thin‐film lithium niobate, it can be scaled for low‐cost manufacturing of high‐coherence visible emitters. Also, the coherence generation process can be transferred to other frequency conversion processes, including optical parametric oscillation, sum/difference frequency generation, and third‐harmonic generation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 05, 2023
- Source ID
- 10.1002/lpor.202200663
Entities
People
- Bohan Li
- Boqiang Shen
- Heming Wang
- Jeremy Staffa
- Jingwei Ling
- John E. Bowers
- Kerry Vahala
- Lin Chang
- Lue Wu
- Mingxiao Li
- Qiang Lin
- Raymond Lopez‐rios
- Usman A. Javid
- Yang He
- Zhiquan Yuan
Organizations
- California Institute of Technology
- Defense Advanced Research Projects Agency
- Defense Threat Reduction Agency
- National Science Foundation
- University of California, Santa Barbara
- University of Rochester