Biophoton emission

BIOPHOTON EMISSION OF BIOLOGICAL SYSTEMS IN TERMS OF ODD AND EVEN COHERENT STATES... 

Biophoton Emission of Biological Systems in Terms of Odd and Even Coherent States 65... 

Here, M is the photon number of background. There are tiny differences between the bio-photon emission for odd and even coherent states - a=2, X=0.5(see Fig. 1). It agrees with the experimental result10. The intensity of biophoton emission decreases with the increasing of parameter k. Using the method, the... 

Biological luminescence is explained by quantum coherence theory assuming that the radiative field is an odd and even coherent field. The radiant intensity curve versus time of biophoton emission agrees with the experimental results. Hence, biophotons arise from a non-classical state radiant field, and the parameter k is also related to the biological characteristics the decay time is shortened with an increasing in k, i.e., it can control the velocity of biophoton emission. 

Popp FA, Gu Q, Li KH. Biophoton emission experimental background and theoretical approaches. Mod Phys Lett 1994 B8 1269-96. 

In this section, we include several important representative applications based on two-photon absorption and up-converted emission processes either in photonics or biophotonics fields, which have been demonstrated by our research group. 

Three-photon active (SPA) materials have been studied extensively over the last few years owing to their potential applications in the fields of telecommunications and biophotonics [26-28, 30], Two major advantages of these materials—longer excitation wavelengths and much better spatial confinement—make them attractive in comparison with two-photon absorption (2PA) based materials [29], One of the most important applications of SPA materials is three-photon pumped frequency-upconversion cavity-less lasing [26, 30], Short infra-red (IR) pulses induce the ASE process via 3-photon absorption followed by fast non-radiative decay to a long-lived state which collects population. Conventional experiments with a pulsed longitudinal pump [27, 28, 30] show that stimulated emission occurs in both forward and backward directions with respect to the pump pulse. 

Guo ZY, Zhu YB, Ma JF, et al. The spectra distribution properties of ultraweak photon emission from biological system and biophoton coherence. Acta Photon Sin 2000 29 890-3. 

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