US 12,316,078 B2
Mode-discriminating emitter device with an active emitter and a passive emitter
Yeyu Zhu, San Jose, CA (US); and Chien-Yao Lu, San Jose, CA (US)
Assigned to Lumentum Operations LLC, San Jose, CA (US)
Filed by Lumentum Operations LLC, San Jose, CA (US)
Filed on Mar. 14, 2022, as Appl. No. 17/654,655.
Claims priority of provisional application 63/302,369, filed on Jan. 24, 2022.
Prior Publication US 2023/0238778 A1, Jul. 27, 2023
Int. Cl. H01S 5/42 (2006.01); H01S 5/02335 (2021.01); H01S 5/026 (2006.01); H01S 5/183 (2006.01)
CPC H01S 5/423 (2013.01) [H01S 5/02335 (2021.01); H01S 5/026 (2013.01); H01S 5/18311 (2013.01); H01S 5/18347 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vertical cavity surface emitting laser (VCSEL) device, comprising:
a substrate layer;
a set of epitaxial layers disposed on the substrate layer;
an active VCSEL formed in the set of epitaxial layers,
wherein the active VCSEL is configured such that electrical pumping that provides optical gain for lasing is to be present in the active VCSEL; and
at least one passive VCSEL formed in the set of epitaxial layers,
wherein the passive VCSEL is configured such that electrical pumping that provides optical gain for lasing is to be absent in the at least one passive VCSEL,
wherein the at least one passive VCSEL is positioned relative to the active VCSEL to cause coupling of one or more modes of the active VCSEL with one or more modes of the at least one passive VCSEL, and
wherein the one or more modes of the active VCSEL include at least one higher-order mode of the active VCSEL and do not include a fundamental mode of the active VCSEL.