Low-threshold InGaAsP ring lasers fabricated using bi-level dry etching

…, JH Abeles, RJ Menna, AM Braun… - IEEE Photonics …, 2000 - ieeexplore.ieee.org
We report a novel bi-level etching technique that permits the use of standard photolithography
for coupling to deeply etched ring resonator structures. The technique is employed to …

Diode-pumped Nd: glass kilohertz regenerative amplifier for subpicosecond microjoule level pulses

A Braun, X Liu, G Mourou, D Kopf, U Keller - Applied optics, 1997 - opg.optica.org
A diode-pumped Nd:fluorophosphate regenerative amplifier was developed. Chirped seed
pulses were amplified to 24 µJ at repetition rates to 1 kHz and to 5 µJ at a 10-kHz repetition …

Noise in fundamental and harmonic modelocked semiconductor lasers: experiments and simulations

T Yilmaz, CM Depriest, A Braun… - IEEE journal of …, 2003 - ieeexplore.ieee.org
Electric-field correlation measurements of fundamental and harmonic modelocked external
cavity semiconductor lasers are presented. Based on these results, an empirical model of a …

Tunable third-order phase compensation by refraction from an intragrating-pair parallel plate

A Braun, T Sosnowski, S Kane… - IEEE Journal of …, 1998 - ieeexplore.ieee.org
An intragrating-pair parallel plate is demonstrated as a simple, low-alignment-tolerance device
for third-order dispersion control in chirped-pulse amplification. We have demonstrated a …

High-quality photonic sampling streams from a semiconductor diode ring laser

CM Depriest, T Yilmaz, A Braun… - IEEE journal of …, 2002 - ieeexplore.ieee.org
We report on the development of an ultralow-noise, external-cavity, actively mode-locked
semiconductor diode laser for application in next-generation photonic sampling systems. A …

Nonlinear propagation of negatively chirped pulses: Maximizing the peak intensity at the output of a fiber probe

MT Myaing, J Urayama, A Braun, TB Norris - Optics Express, 2000 - opg.optica.org
A simple phenomenological scaling behavior is found for the power dependence of the
pulse width for negatively pre-chirped pulses propagating in a normally dispersive fiber; the …

[PDF][PDF] Cerebral glucose metabolic rates after 30 and 45 minute acquisitions: a comparative study

A Kumar, A Braun, M Schapiro, C Grady… - Journal of Nuclear …, 1992 - Soc Nuclear Med
45 Minute Acquisitions:A ComparativeStudy Page 1 Laboratory ofNeurosciences, National
Institute on Aging and NIH Clinical Center, Bethesda, Maryland The Positron Emission …

Carpal tunnel syndrome with polymyalgia rheumatica

T Ahmed, AI Braun - Arthritis & Rheumatism: Official Journal of …, 1978 - Wiley Online Library
Association of carpal tunnel syndrome with systemic diseases is well established. Carpal
tunnel syndrome preceded or existed simultaneously in 5 patients with polymyalgia rheumatica…

Use of self-trapped filaments in air to trigger lightning

XM Zhao, JC Diels, A Braun, X Liu, D Du… - International …, 1994 - opg.optica.org
A study of the possibility of triggering lightning with optical pulses has been investigated. A
theoretical analysis shows that a continuous ionized path of several tens of meters should be …

Long‐term suppression of central serotonergic activity by corticosteroids: A possible model of steroid‐responsive myoclonic disorders

PA Nausieda, PM Carvey, A Braun - Neurology, 1982 - AAN Enterprises
Chronic administration of cortisol succinate (12.5 mg per kilogram per day) to guinea pigs
suppressed jumping behavior induced by 1–5 hydroxytryptophan and abolished diurnal …