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Finkel MI, Maslennikov SN, Gol'tsman GN. The concept of the receiving complex for the “Millimetron” space radio telescope. Radiophys Quant Electron. 2007;50(10-11):837–46.
Abstract: We consider the current status of research in the development of a submillimeter and far-infrared receiving instrument and propose promising solutions for the receivers of the spaceborne telescope “Millimetron,” which allow one to realize comprehensively the opportunities given by this international project administrated by the Astrospace Center of the P. N. Lebedev Physical Institute of the Russian Academy of Sciences.
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Finkel MI, Maslennikov SN, Gol'tsman GN. Terahertz heterodyne receivers based on superconductive hot-electron bolometer mixers. Radiophys Quant Electron. 2005;48(10-11):859–64.
Abstract: We consider recent results in development of hot-electron bolometer mixers. Special attention is paid to optimization of the contacts between the antenna and the active area of a superconducting film. An important result in the study of the parasitic effect of direct detection is obtained during the measurement of the noise temperatures by the hot/cold load method. The latest results of studies of the waveguide hot-electron bolometer mixers and their successful practical applications are considered. Progress in development of high-frequency (over 1.3 THz) heterodyne receivers for several important international projects is discussed and new submillimeter radio astronomy projects ESPRIT and SAFIR are described.
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Finkel MI, Maslennikov SN, Vachtomin YB, Svechnikov SI, Smirnov KV, Seleznev VA, et al. Hot electron bolometer mixer for 20 – 40 THz frequency range. In: Proc. 16th Int. Symp. Space Terahertz Technol. Göteborg, Sweden; 2005. p. 393–7.
Abstract: The developed HEB mixer was based on a 5 nm thick NbN film deposited on a GaAs substrate. The active area of the film was patterned as a 30×20 μm 2 strip and coupled with a 50 Ohm coplanar line deposited in situ. An extended hemispherical germanium lens was used to focus the LO radiation on the mixer. The responsivity of the mixer was measured in a direct detection mode in the 25÷64 THz frequency range. The noise performance of the mixer and the directivity of the receiver were investigated in a heterodyne mode. A 10.6 μm wavelength CW CO 2 laser was utilized as a local oscillator.
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Danerud M, Winkler D, Zorin M, Trifonov V, Karasik B, Gershenzon EM, et al. Picosecond detection of infrared radiation with YBa2Cu3O7-δ thin films. In: Birch JR, Parker TJ, editors. Proc. SPIE. Vol 2104. Spie; 1993. p. 183–4.
Abstract: Picosecond nonequilibrium and slow bolometric responses from a patterned high-Tc superconducting (HTS) film due toinfrared radiation were investigated using both modulation and pulse techniques. Measurements at A, = 0.85 [tm andA, = 10.6 lim have shown a similar behaviour of the response vs modulation frequency f. The responsivity of the HTS filmbased detector at f ..- 0.6-1 GHz is estimated to be 10-2 – 10-1 V/W.
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Danerud M, Winkler D, Lindgren M, Zorin M, Trifonov V, Karasik B, et al. A fast infrared detector based on patterned YBCO thin film. Supercond Sci Technol. 1994;7(5):321–3.
Abstract: Detectors for infrared radiation ( lambda =0.85 mu m) were made of 50 nm thick YBa2Cu3O7- delta films on LaAlO3 and MgO or 60 nm thick films on NdGaO3. Parallel strips (1 mu m wide by 20 mu m long) were patterned in the films and formed the active device. These devices were designed to detect short infrared laser pulses by electron heating. The detectors were current biased into the resistive and the normal states. The response was studied in direct pulse measurements as well as by amplitude modulation of a laser. The pulse measurements showed a fast picosecond response followed by a slower decay related to phonon escape through the film-substrate interface and heat diffusion in the substrate. The frequency spectra up to 10 GHz showed two slopes with a knee corresponding to the phonon escape time.
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Chuprina IN, An PP, Zubkova EG, Kovalyuk VV, Kalachev AA, Gol'tsman GN. Optimisation of spontaneous four-wave mixing in a ring microcavity. In: J. Phys.: Conf. Ser. Vol 47.; 2017. p. 887–91.
Abstract: Abstract. A theory of spontaneous four-wave mixing in a ring microcavity is developed. The rate of emission of biphotons for pulsed and monochromatic pumping with allowance for the disper- sion of group velocities is analytically calculated. In the first case, pulses in the form of an increasing exponential are considered, which are optimal for excitation of an individual resonator mode. The behaviour of the group velocity dispersion as a function of the width and height of the waveguide is studied for a specific case of a ring microcavity made of silicon nitride. The results of the numeri- cal calculation are in good agreement with the experimental data. The ring microcavity is made of two types of waveguides: com- pletely etched and half etched. It is found that the latter allow for better control over the parameters in the manufacturing process, making them more predictable.
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Cherednichenko S, Khosropanah P, Adam A, Merkel HF, Kollberg EL, Loudkov D, et al. 1.4- to 1.7-THz NbN hot-electron bolometer mixer for the Herschel space observatory. In: Phillips TG, Zmuidzinas J, editors. Proc. SPIE. Vol 4855. SPIE; 2003. p. 361–70.
Abstract: NbN hot- electron bolometer mixers have reached the level of 10hv/k in terms of the input noise temperature with the noise bandwidth of 4-6 GHz from subMM band up to 2.5 THz. In this paper we discuss the major characteristics of this kind of receiver, i.e. the gain and the noise bandwidth, the noise temperature in a wide RF band, bias regimes and optimisation of RF coupling to the quasioptical mixer. We present the status of the development of the mixer for Band 6 Low for Herschel Telescope.
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Cherednichenko S, Drakinskiy V, Baubert J, Lecomte B, Dauplay F, Krieg JM, et al. 2.5 THz multipixel heterodyne receiver based on NbN HEB mixers. In: Proc. SPIE. Vol 6275.; 2006. 62750I (1 to 11).
Abstract: A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5 µm thick Si3N4/SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. The gain bandwidth of the HEB mixers on Si3N4/SiO2 membranes was found to be 0.7÷0.9 GHz, which is much smaller than for similar devices on silicon. Application of buffer layers and use of alternative types of membranes (e.g. silicon-on-insulator) is under investigation.
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Chen J, Kang L, Jin BB, Xu WW, Wu PH, Zhang W, et al. Properties of terahertz superconducting hot electron bolometer mixers. Int J Terahertz Sci Technol. 2008;1(1):37–41.
Abstract: A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied.
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Boyarskii DA, Gershenzon VE, Gershenzon EM, Gol'tsman GN, Ptitsina NG, Tikhonov VV, et al. On the possibility of determining the microstructural parameters of an oil-bearing layer from radiophysical measurement data. J of Communications Technology and Electronics. 1996;41(5):408–14.
Abstract: A method for the reconstruction of microstructural properties of an oil-bearing rock from the spectral dependence of the transmission factor of submillimeter waves is proposed.
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