Design and characteristics of a tapered amplifier diode system by seeding with continuous-wave and mode-locked external cavity diode laser

Design and construction of cost-effective tapered amplifier systems for laser cooling and trapping experiments

“…13 show that the fiber coupling efficiency is in the 25-35% range, which is lower than, but not too different from, efficiencies reported earlier. 17 We find that the single-mode fiber coupling efficiency, if optimized for a certain TA current, decreases by several percent as the TA current is then increased or decreased over a 0.75-1.9 A range. This decrease in fiber-coupling efficiency likely comes from changes in the astigmatism of the TA output beam at different TA currents.…”

“…It is well-documented that the mode profile of the TA output departs significantly from that of a TEM 00 mode. 17,20,26 We thought it would be useful to present our results for aligning the TA output into a single-mode optical fiber in order to clean up the spatial profile; the setup is indicated in Fig. 10.…”

“…The maximum coupling efficiency we have been able to achieve is 40%, which is similar to what has been previously reported. 17 The fiberport to which the output end of the fiber is connected is chosen depending upon the desired size of the output beam from the fiber. Note that the geometry of the TA output is somewhat powerdependent, so while preliminary alignment with the fiber can be carried out at low operating current, final alignment should be carried out at normal operating current.…”

High Spectral Resolution Lidar Based on a Potassium Faraday Dispersive Filter for Daytime Temperature Measurement

“…Another laser is tapered amplifier diode system by seeding with continuous-wave DBR laser [3]. The DBR laser is easily tuned to K resonance line using wavelength-locking system, and tapered amplifier diode can provide high repletion rate pulse laser.…”

High-Power Hybrid Mode-Locked External Cavity Semiconductor Laser Using Tapered Amplifier with Large Tunability

“…Using two cylindrical lenses, it is then possible to create a high-quality, near circular, collimated, high-power output beam. Tapered amplifiers are more commonly used in a master-oscillator power amplifier (MOPA) setup, where the temporal and spatial characteristics of the output of a low-power oscillator are well maintained through amplification in a tapered structure [7,8]. Instead, in the configuration presented here, the tapered amplifier (Eagleyard, 780 nm, 1 W, EYP-TPA-0780-01000-3006-CMT03-0000) is used as gain medium in a cavity.…”