An ultrastable 1397-nm laser stabilized by a crystalline-coated room-temperature cavity.

State-of-the-art optical cavities are pivotal in pushing the envelope of laser frequency stability below 10-16. This is often achieved by extending the cavity length or cooling the system to cryogenic temperatures to reduce the thermal noise floor. In our study, we present a 30-cm-long cavity that operates at room temperature and is outfitted with crystalline coatings.

Ultrahigh-reflective optical thin films prepared by reactive magnetron sputtering with RF-induced substrate bias.

Optical thin films with high-reflectivity (HR) are essential for applications in quantum precision measurements. In this work, we propose a coating technique based on reactive magnetron sputtering with RF-induced substrate bias to fabricate HR-optical thin films. First, atomically flat SiO2 and Ta2O5 layers have been demonstrated due to the assistance of radio-frequency plasma during the coating process.

Role of Hiraoka's transurethral detachment of the prostate combined with biopsy of the peripheral zone during the same session in patients with repeated negative biopsies in the diagnosis of prostate cancer.

Background: Persistent suspicion of prostate cancer (PCa) due to a rising prostate-specific antigen (PSA) level after repeated negative biopsies is a serious challenge in clinical practice.

Aim: To determine the role of Hiraoka's transurethral detachment of the prostate (TUDP) combined with biopsy of the peripheral zone during the same session in patients with repeated negative biopsies in the diagnosis of PCa.

Methods: We retrospectively evaluated the records of 10 patients who were eligible for inclusion in our hospital between December 2012 and August 2017.