Experimental Optimization of the Output Power of a Copper Vapor Laser Using Air as a Buffer Gas

Abstract

In order to investigate the effect of the pressure buffer gas and frequency on the output power, a copper vapor laser with active medium length of 60 cm and bore of 16 mm has been operated and optimized using air as a buffer gas. The observed oscillatory behavior of the output power versus frequency is in good agreement with the previous reports. The measured results show the maximum output power of ~1.6W at the optimum pressure of 3.8 torr and frequency of 17 kHz. Abundance of the air and reduction of the system volume due to elimination of the gas handling system as well as the economically benefits are the advantages of the employing air as a buffer gas in the copper vapor laser operation.

Self-Heating Analysis of 1570 nm InGaAsP Buried Tunnel Junction Photonic Crystal VCSEL

“…The lasers are devices that radiate light through a procedure of optical amplification based on the stimulated emission of photons (Marjani, et al, 2011a;Marjani, et al, 2013;Mirzaei et al, 2016;Behrouzinia, et al, 2016;Deppe, et al, 2018). In recent decade, one of the serious research topics in high--performance optical communication systems is the vertical--cavity surface--emitting laser (VCSEL) where single mode operation, high--output power, high--speed modulation and low manufacture cost are necessary.…”

De-Noising of ECG Signals by Design of an Optimized Wavelet

“…The ECG signal is a reference signal for pulse wave delay using photoplethysmographic signal and Laser-Doppler (LD) measurements. The basis of the registration is the selfmixing in the diode lasers cavities [15]- [25]. Also, the ECG signals are going to be transmitted into laser beam such as VCSELs [26]- [38] to stablish communication between the ECG and the medical center.…”