INTRODUCTION AND OBJECTIVES The management of urolithiasis in patients on anticoagulants presents a challenge to the endourologist. Due to multiple comorbidities, it may be impossible to safely discontinue the anticoagulant treatment. Other modalities such as shock wave lithotripsy and PCNL are contraindicated in these patients, so ureteroscopic treatment may be the only option. We conducted a ...

0.5% Holmium (Ho) doped YAG single crystal fiber (SCF) was fabricated using Laser Heated Pedestal Growth (LHPG) method and characterized for its optical absorption and emission properties involving transitions between the 5I8 and 5I7 energy levels. The results verified the absorption peaks suitable for in-band direct pumping at 1908 nm and 1932 nm with the emission occurring between 2050 and 21...

A superconducting quadrupole magnet has been designed for use as the focusing element in a low charge state linac proposed at Argonne. The expected field gradient is 350 T/m at an operating current of 53 A, and the bore diameter is 3 cm. The use of rare earth material holmium for pole tips provides about 10 % more gradient than iron pole tips. The design and the status of construction of a prot...

We present the results on interaction of an all-fiber Holmium-doped laser CW radiation at a wavelength 2100 nm with soft tissues and compare it other obtained by most used solid-state systems. Ex-vivo single spot experiments were carried out porcine longissimus muscles varying impact parameters in wide range (average output power 0.3, 0.5 1.1 W; exposure time 5, 30 60 s). Evaluation was size co...

We report the design and performance of medium slope efficiency (64%) Holmium-doped fiber amplifiers (HDFAs) with novel alternative in-band pump wavelengths in 1720-2000 nm spectral region. demonstrate through simulations that 1840-1860 can yield significantly improved output power, gain, optical-optical conversion compared to previous technical industry standard wavelength 1940 nm. Our are ver...