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We propose a spectrum analyzer based on the properties of a hologram recorded with the field transmitted by a Fabry-Perot etalon. The spectral response of this holographic Fabry-Perot spectrometer (HFPS) is analytically investigated in the paraxial approximation and compared with a conventional Fabry-Perot etalon of similar characteristics. We demonstrate that the resolving power is twice increased and the free spectral range (FSR) is reduced to one-half. The proposed spectrometer could improve the operational performance of the etalon because it can exhibit high efficiency and it would be insensible to environmental conditions such as temperature and vibrations. Our analysis also extends to another variant of the HFPS based on holographic multiplexing of the transmitted field of a Fabry-Perot etalon. This device increases the FSR, keeping the same HFPS performance. 相似文献
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We describe an intracavity LiNbO(3) Fabry-Perot etalon for frequency stabilization and tuning of a single-mode quasi-continuous-wave Ti:Al(2)O (3) ring laser. Taking into account the 150-micros pulse duration and the 40-Hz repetition rate of our laser, we achieve stabilization by 266-kHz modulation of 100-V peak-to-peak voltage applied to the electro-optic crystal. Tuning is ensured by the presence of a gain loop that contains a lock-in amplifier reacting with a multimorphous ceramic by means of 0-300-V dc voltage, which causes slight rotation of the LiNbO(3) Fabry-Perot etalon. A continuous frequency scan of 6 GHz was made that potentially can be extended to 6 cm(-1) . 相似文献
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S. G. Rautian 《Optics and Spectroscopy》2008,105(1):93-102
Specific features of the Fabry-Perot etalon with negative permittivities of the medium are analyzed. Inhomogeneous waves may exhibit, after passing through such an etalon, a giant amplitude enhancement. They remain inhomogeneous and do not transfer the field energy. Due to absorption and other losses, there may arise, in the inhomogeneous wave, running components and interference effects. The etalon cannot improve the diffraction-limited resolving power of the optical devices detecting traveling waves. The possibilities of application of the etalon in the near-field optics are noted. The giant enhancement of the inhomogeneous wave amplitude occurs due to resonance of the incident wave with eigen (surface) waves of the input and output planes of the etalon. It is shown that, with respect to inhomogeneous waves, the Fabry-Perot etalon with negative permittivities is a narrow-band filter with the peak transmission for the spatial frequency of the Fourier expansion of the boundary values on the order of the inverse wavelength. Under the resonance conditions, the running components, when passing through the etalon, experience aberrational distortions. Polarization properties of the resonance amplification are clarified. 相似文献
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By placing an intracavity Fabry-Perot transmission etalon between quarter-wave plates it is possible to operate it at normal incidence without spurious oscillation due to reflections from the etalon. The insertion loss and reduced finesse associated with a tilted etalon are thereby avoided. This technique will allow the use of longer etalons thus allowing much greater mode selectivity. 相似文献
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将一激光器的工作频率锁定在Fabry-Perot标准具(简称F-P)的共振峰上,利用F-P标准具光学共振频率随腔长的灵敏响应特性,用光学拍频方法测得F一P腔体材料在微小应力作用下的应变值,就可得到材料的弹性模量.本文就此提出了测量材料拉、压弹性模量相对误差的一种方法,并且实测了石英材料拉、压弹性模量的相对误差 相似文献
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简叙了双Fabry-Perot标准具在自行研制的测风激光雷达中检测多普勒频移的原理,给出了测风激光雷达系统的参数,对入射光束的入射角和发散角对标准具频谱曲线的影响进行了分析和稳定性实验,结果显示在短期内不稳定性带来的风速测量误差仅为0.016 m/s。测定了双标准具的频谱曲线,通过对标准具频谱曲线的分析显示:测量误差在测量的动态范围内随着速度的增大而增大,随着测量脉冲次数的增加而减少,同时速度的测量误差随着高度的增加而加大,在5 km时最大测量速度误差为0.6 m/s。 相似文献
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We present a new method for precise measurement of parallelism and relative flatness of a Fabry-Perot etalon. This method is based on the analysis of multiple-beam transmission interference fringe pattern. Two-dimensional defect information is obtained by using small apertures placed over the entire area of the etalon. Experimental results for precise testing of an etalon with repeatability better than #x03BB;/2300 to 3#x03C3; are presented. 相似文献
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M. Stryjak A. Budnicki R. Lewicki P. R. Kaczmarek K. M. Abramski 《Opto-Electronics Review》2008,16(2):179-184
Modern WDM telecommunication systems require stable and calibrated laser sources. In this paper, we present examples of such
lasers based on erbium doped fibres, i.e., discretely tunable and multiwavelength ring lasers. For the first case, tuning
is possible due to a tunable Bragg grating overlapping spectrally the third telecommunication window (1550 nm). When a Fabry-Perot
etalon is inserted into the cavity, discrete tunable operation with appropriate spacing between operating wavelengths is possible.
Different free spectral ranges (FSR) of applied etalons ensured operation at a wavelength spacing 0.4 nm, 0.8 nm or 1.6 nm,
respectively. When an acoustooptical Bragg frequency shifter was inserted together with the Fabry-Perot etalon, the stable
simultaneous multiwavelength operation covering the erbium doped gain range was achieved. 相似文献
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We report on the generation of a type-I multimode two-photon state on a rubidium D(2) line (780 nm) using periodically poled KTiOPO(4) crystals. With a degenerate optical parametric oscillator far below threshold, we observe an oscillatory correlation function; the cross correlation between two photons shows a cavity bandwidth of about 7.8 MHz. We also use a Fabry-Perot etalon to filter its most longitudinal modes and observe its time correlation function. The experimental data are well fitted to theoretical curves. This system could be utilized for demonstrating storage and retrieval of narrow-band photons in Rb atomic ensembles, which is important for long-distance quantum communication. 相似文献
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We report a frequency-stabilized semiconductor-based mode-locked laser that uses a phase modulator and an intracavity Fabry-Perot etalon for both active mode-locking and optical frequency stabilization. A twofold multiplication of the repetition frequency of the laser is inherently obtained in the process. The residual timing jitter of the mode-locked pulse train is 13 fs (1 Hz to 100 MHz), measured after regenerative frequency division of the photodetected pulse train. 相似文献
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A new type of tunable narrowband filter is proposed. This filter is a combination of a Fabry-Perot etalon, which permits the selection of a comb of discrete narrow bands, and a high-efficiency rotating volume Bragg grating recorded in photo-thermo-refractive glass, which permits tuning between the Fabry-Perot resonances. A tunable filter for fixed wavelengths in the region of 1.5 mum with a spectral width of 220 pm (FWHM), separation between channels of 800 pm, and throughput of 95% (losses <0.2 dB) is demonstrated. 相似文献
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非共振条件下高斯光束斜入射法布里-珀罗干涉仪的透射特性 总被引:1,自引:0,他引:1
基于多光束干涉原理,研究了当高斯光束的载波频率与法布里—珀罗(F P)干涉仪的谐振频率存在偏差(即非共振)时,高斯光束斜入射F P干涉仪的透射特性。结果表明,与共振情况相比,非共振条件下透射光束的峰值强度及其所对应的位置、以及光斑的大小随入射角的变化都发生了显著的改变。 相似文献
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We propose and demonstrate an electro-optic modulator based on a Michelson interferometer with a Gires-Tournois etalon (GTE, or asymmetric Fabry-Perot etalon) in one of the two arms. The insertion of a GTE significantly reduces the required interaction length or the operation voltage. Our experimental and theoretical results agree well. An extension of our setup to a waveguide configuration can lead to practical modulators and switches with greater compactness and reduced operation voltage for optical fiber communications. 相似文献
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Fiber Fabry-Perot etalon (FFPE) is a device designed as an optical frequency filter, and its transmission characteristics
change depending on temperature. The temperature dependence of the transmission frequency of an FFPE made of a highly birefringent
fiber was found to be −2:31 GHz/deg, which is almost the same as that of a conventional etalon. On the contrary, its temperature
dependence of the transmission frequency separation due to birefringence was found to be −140 MHz/deg. This is about 18 times
larger than that for a conventional FFPE, and it implies that an FFPE made of highly birefringent fiber is promising as a
temperature sensor with a high precision. 相似文献
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Experiments have been carried out on the injection-locking of a pulsed dye laser to an argon-laser-pumped CW dye laser of 50 MHz linewidth without longitudinal mode matching. With the inclusion of a Fabry-Perot etalon within the ring laser arrangement of the pulsed laser, the initiation of injection locking and saturation occur at low injection powers. 相似文献
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法布里-珀罗标准具由于其结构简单、性能稳定,不仅可以实现不同频率光束的分离、高精度的长度测量、分析激光的纵模结构等,还可用于激光器的稳频系统。本文对F-P标准具的透射率、半高宽度、自由光谱区以及透射率与温度的关系等特性进行了研究,并将其应用在激光器的稳频装置中。 相似文献
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1 Introduction AlongwiththegreatdevelopmentofWDMapplications ,thewavelengthselectivephotodetectionisbeneficialtotheopticalfibercommunication .Uptodate ,therehavebeenmanykindsofwavelengthselectivephotoreceiversthatarebeingappliedforsuchapurpose .Theyareu… 相似文献
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A mobile molecular Doppler wind lidar at an eye-safe wavelength of 355 nm based on double-edge technique is being built in Hefei (China) for wind measurement from 10-to 40-km altitude. The structure of this lidar system is described. A triple Fabry-Perot etalon is employed as a frequency discriminator whose parameters are optimized. The receiver system is designed to achieve compactness and stability by putting in a standard 19-inch socket bench. Simulation results show that within the wind speed dynamic range of ±100 m/s, the horizontal wind errors due to noise are less than 1 m/s bdow 20-km altitude for 100-m vertical resolution, and less than 5.5 m/s from 20 km up to 40 km for 500-m vertical resolution with 400-mJ laser energy, 30-min temporal resolution, and a 45-cm aperture telescooe. 相似文献