Optical injection locking generally occurs when light from a master laser is unidirectionally injected into a slave laser, such that the injected light overcomes spontaneous emission inside the cavity, and forces the slave laser to behave as a frequency copy of the master. Here, we study the limits of stability for optically pre-amplified optical injection locking in the case of large added noise on the input field and in the presence of a phase locked loop which minimizes the frequency offset between master and slave lasers. We present a set of modified rate equations which we use to describe the physics of the system near the limit of stable injection locking, and report on phase slips which occur due to injected noise momentarily destabilizing the system. We then provide experimental evidence to support the behavior seen in simulation, and are able to successfully recover a CW wave at -80 dBm black box input power (-70 dBm for phase slip free operation), providing 20 dBm of output power from the injection locked slave laser.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.509284 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An ultra-narrow-linewidth laser is a core device in fields such as optical atomic clocks, quantum communications, and microwave photonic oscillators. This paper reports an ultra-narrow-linewidth self-injection locked semiconductor laser, which is realized through optical feedback from a high-Q (258 million) Fabry-Perot (FP) cavity constructed with three mirrors, generating an output power of 12 mW. Employing a delay self-heterodyne method based on a signal source analyzer, the phase noise of the laser is -129 dBc/Hz at 100 kHz offset frequency, with an intrinsic linewidth of 3 mHz.
View Article and Find Full Text PDFA Steerable Microcatheter Effectively Worked in Tumor Embolization.
J Neuroendovasc Ther
October 2024
Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
Objective: A Leonis Mova (LM; SB Kawasumi, Kanagawa, Japan), one of the steerable microcatheters, has a remote-controlled flexible catheter tip manipulated with a dial in the hand grip, which enables operators to overcome complicated branching in endovascular surgeries. We report a case of a pituitary tumor in which the LM worked effectively as a distal access catheter (DAC) in tumor embolization.
Case Presentation: A female patient in her 70s complained of bitemporal hemianopsia, and an MRI revealed a pituitary tumor that appeared hypervascular.
We predict the existence of a novel type of temporal localized structure in injected Kerr-Gires-Tournois interferometers (KGTI). These bright pulses exist in the normal dispersion regime, yet they do not correspond to the usual scenario of domain wall locking that induces complex shape multistability, weak stability, and a reduced domain of existence. The new states are observed beyond the mean-field limit and out of the bistable region.
View Article and Find Full Text PDFFar Posterior Approach for Rib Fracture Fixation: Surgical Technique and Tips.
JBJS Essent Surg Tech
December 2024
Department of Orthopedics, OhioHealth Health System, Columbus, Ohio.
Article Synopsis
- The video article discusses the far posterior or paraspinal approach for treating posterior rib fractures, which enhances intraoperative visibility and minimizes muscle damage.
- This method helps preserve periscapular strength, achieving up to 95% recovery six months after surgery through muscle-sparing techniques.
- The surgical process involves precise skin incision and careful dissection of muscles like the trapezius, rhomboids, and latissimus dorsi to allow for effective access and treatment of the fractures without significant tissue loss.
Inhibition of miR-92a normalizes vascular gene expression and prevents diastolic dysfunction in heart failure with preserved ejection fraction.
J Mol Cell Cardiol
November 2024
Goethe University Frankfurt, Institute for Cardiovascular Regeneration, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; German Centre for Cardiovascular Research, Partner Site Rhine-Main, 60590 Frankfurt am Main, Germany; Cardio-Pulmonary Institute (CPI), Partner Site Frankfurt, 60590 Frankfurt am Main, Germany. Electronic address:
Heart failure with preserved ejection fraction (HFpEF) remains a major public health burden with increasing prevalence but only few effective therapies. Endothelial dysfunction and inflammation are identified as pathophysiological drivers of HFpEF disease progression. MicroRNAs are increasingly recognized as key regulators of these pathological processes, while antimiR-based therapies have been emerged as promising therapeutics in mice and humans.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!