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Cornell engineers have created a deep-ultraviolet laser using semiconductor materials that show great promise for improving the use of ultraviolet light for sterilizing medical tools, purifying water,...
In science fiction, firing powerful lasers looks easy -- the Death Star can just send destructive power hurtling through space as a tight beam. But in reality, once a powerful laser has been fired, ca...
Trihydrogen, or H3+, has been called the molecule that made the universe, where it plays a greater role in astrochemistry than any other molecule. While H3+ is astronomically abundant, no scientist un...
2017SPIE高强度高功率激光器技术与应用会议(2017 Technology and Applications of Intense,High Average Power Lasers Workshop)。
Optics has a long and distinct tradition among physical sciences. Ever-present throughout human history, optical systems and phenomena have been subject of interest in all cultures and epochs, from th...
Letting go with lasers     Letting go  lasers       2015/7/13
Small objects tend to cling to everything. It's why parents dread hosting parties that involve confetti. It's why glitter is fun for crafts--until it finds its way onto everything else you touch.When ...
Highly Tm-doped silicate glasses and fibers were developed, which exhibit a high slope efficiency of 68.3% and a gain per unit length of greater than 2dB/cm. Single frequency fiber lasers with laser l...
A phase preserving limiter based on injection locking in semiconductor lasers is experimentally investigated for 10Gb/s phase encoded signals. The proposed scheme exhibits significant amplitude noise ...
Single-mode InAs/InP quantum dot DFB lasers with side-mode suppression ratio greater than 62 dB are demonstrated, operating CW up to 80°C. Relative intensity noise was less than -153 dB/Hz from 1 MHz ...
Novel three-terminal FICSLs in VCSEL form were designed and fabricated for direct gain modulation, which by analysis introduces an additional zero to the modulation transfer function and promises modu...
40-Gbps transmission over 5-km single-mode fiber using a directly modulated 1.3-μm AlGaInAs MQW distributed-reflector laser was demonstrated. Error-free operations up to 70oC have been achieved.
We describe the performance of 1.3-μm InGaAlAs RWG-MQW-DFB lasers and EA-DFB lasers applicable to 40G/100G Ethernet. We obtained a 3-dB-down bandwidth frequency of over 30 GHz and clear eye opening at...
We present work carried out to examine the characteristics and transmission performance of a three section tunable slotted Fabry-Pérot laser. The low cost laser exhibits many attractive properties inc...
A passively mode-locked fiber laser is realized using an intracavity intensity-modulating effect in multilayered graphene efficiently prepared by taping method. 10.6-MHz pulse trains with 40-dB extinc...
By using oxide-relief technique, a high modulation-efficiency (9.8GHz/mA 1/2 ) and a high modulation-speed (34 Gbps) with a record-high data-rate/power-dissipation ratios (2.9 (9.2) Gbps/mW at 34 (12....

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