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We report a high-power, high-efficiency Tm, Ho:YAlO3 (Tm, Ho:YAP) laser pumped by two laser diodes. The Tm (5 at.%) and Ho (0.5 at.%):YAP crystal is cut along the a axes, and the resultingcrystals are measured 4 × 4 × 8 mm3. The laser crystal is double end-pumped by two 18.0-W fiber-coupled laser diodes at 793.6 nm, and the output power of the Tm, Ho:YAP laser is 13.8W in continuous wave (CW) mode...
We propose a scheme for fast random number generation with a bandwidth-enhanced chaotic signal generated by injecting the signal of a traditional chaotic external-cavity semiconductor laser (ECSL) into a spectrum expansion module (SE). Our simulation results show that the bandwidth-enhanced chaotic can be generated and its efficient bandwidth can be greatly enhanced up to 70 GHz. Random bits in our...
Solid state laser lighting is a newly emerging technology that combines a blue laser diode (LD) with a yellow-emitting phosphor converter to generate high-brightness white light. Due to high flux irradiation as well as thermal attacks from the incident laser, this technology draws a demanding requirement on the thermal performance of the phosphor converter. In this work, we design a Al2O3-YAG:Ce composite...
LiDAR(Light Detection And Ranging) is an important sensor in the environmental perception of self-driving cars. This article mainly aims at the existing unmanned application environment, design a feasible LiDAR(Light Detection And Ranging) for low-speed short-range barge truck, and definition of parameters on laser radar on the whole measurement range: 100m, accuracy: 3cm, data acquisition frequency...
A security-enhanced chaos communication scheme by expanding and compressing the spectrum of modulated chaotic carrier is proposed, in virtue of a spectrum expansion module composed of two phase modulators and two dispersion mediums. The numerical results demonstrate that the efficient bandwidth of modulated chaotic carrier can be expanded up to several tens of GHz and the RF spectrum is uniformly...
Chaos synchronization in closed-loop external cavity semiconductor lasers subject to phase-conjugate feedback is investigated theoretically and numerically. We theoretically analysed the injection-locking synchronization condition and numerically confirm it. The simulation results indicate that with introduction of feedback phase difference according to the theoretical synchronization condition, high...
We have numerically demonstrated a high-speed bidirectional chaotic communication, where chaotic optical signal with suppressed time delay signature is used. In this scheme, the output of a third semiconductor laser is used as the common signal driving the other two identical lasers with self-feedback to be synchronized. To enhance the bandwidth of the chaotic signal employing in the communication,...
Directly modulated semiconductor lasers for underwater wireless optical communication (UWOC) have limitations in output power and beam quality. Diode-pumped solid-state lasers (DPSSLs) have the merits of long lifetime, high stability, large power and good beam quality, which are promising to realize long-each UWOC. We compose a DPSSL with discrete components and measure its key parameters. The bandwidth...
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