Invasive optical pumping for room-temperature masers, time-resolved EPR, triplet-DNP, and quantum engines exploiting strong coupling.
Invasive optical pumping for room-temperature masers, time-resolved EPR, triplet-DNP, and quantum engines exploiting strong coupling.
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DOI：
10.1364/oe.401294
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发表时间：
2020-09
期刊：
影响因子：
3.8
通讯作者：
Hao Wu;S. Mirkhanov;Wern Ng;K. Chen;Yuling Xiong;M. Oxborrow
中科院分区：
文献类型：
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作者：
Hao Wu;S. Mirkhanov;Wern Ng;K. Chen;Yuling Xiong;M. Oxborrow
我们探索了一种方法，用于光学泵浦的光学致密的磁性材料的身体。这个挑战出现在时间分辨电子顺磁共振（TREPR），基于三重态的动态核极化（DNP）和腔QED。并五苯掺杂对三联苯晶体生长在不同形状的光波导末端，泵浦光可以通过这些末端深深地注入到晶体中。当作为增益介质加入微波激射器中时，发现与传统的侧面泵浦相比，达到激射阈值所需的泵浦光强度减少了11倍，增益介质可以吸收54倍以上的脉冲能量而不受损伤，从而获得了创纪录的峰值功率-5dBm。
We explore an approach for optically pumping a body of optically dense magnetic material. This challenge arises in time-resolved electron paramagnetic resonance (TREPR), triplet-based dynamic nuclear polarisation (DNP), and cavity QED. Crystals of pentacene-doped p-terphenyl were grown around variously shaped ends of optical waveguides, through which pump light could be injected deeply into the crystal. When incorporated into a maser as the gain medium, we found that, compared to conventional side-pumping, 11 times less pump beam intensity was needed to reach the masing threshold and 54 times more pulse energy could be absorbed by the gain medium without damage, resulting in a record peak output power of -5 dBm.