查询词典 tunable

We generated a lot of tunable coherent radiation from 92 to 122um in nitrogen,carbonmonoxide,hydrogen and methane by both resonant and nonresonant third harmonic generationprocesses,among which hydrogen and methane were the first time to be used.

我们通过非共振以及共振的三次谐波过程在N2，CO，H2和CH4中获得了92-122nm之间大量可调谐的相干光输出，其中在H2和CH4中的工作都是首次报导。

To reduce the calibration uncertainty of spectral radiance responsivity, a new tunable laser-based integrating sphere source was developed.

为了提高光谱辐亮度响应度的定标精度，研制了新型的利用宽可调谐激光的积分球光源。

The development of a broadly tunable excimer laser source by exploiting bound-free transitions of electron beam-pumped diatomic and triatomic are gas halides is described.

宽带可调谐准分子激光源，是电子束泵浦的双原子和三原子稀有气体卤化物通过束缚-自由跃迁产生的。

In this system, the wavelength of the narrow-bandwidth optical source from the Fabry-Perot tunable filter and broadband source could be adjusted by the digital signal processor after the operating point is changed. Moreover, the influence of the factors such as the instability of the light source and the slowly unaccelerated aging of the system, can be eliminated or decreased by the auto-calibration method based on the software.

该系统利用数字信号处理器控制可调珐珀滤波器自动输出波长满足工作点要求的窄带光，同时还通过软件校准的办法消除了因光源的不稳定、系统老化等缓变因素引起的信号波动对测量结果的影响。

The Optical Parametric Oscillator has been widely used as a wavelength tunable coherent radiation source, since it offers a broad tuning range from ultraviolet to far infrared, and some of its wavelengths are unaccessible to common laser systems, so OPO has great value of application.

光学参量振荡器具有可调谐的优点，调谐范围可从紫外到远红外以上，弥补了普通的激光器只能输出一种波长激光的缺点，并且覆盖了普通激光器不能达到的波长，具有很高的应用价值。

Analytical formulae are presented for the first time to describe the shift in the resonance wavelength of LPG in response to etching of the fiber cladding or a change in the external refractive index. The accuracy of the formula is confirmed by comparision with numerical simulations and experimental results. We demonstrated that the resonance wavelengths of an etched LPG are more sensitive refractive index than those of an unetched grating. The bending properties of long period fiber grating written in different type fiber are studied experimentally. The transmission peaks and the central wavelength of LPG change with the bending of the fiber. A new peak appears at the shorter wavelength when the fiber is being bent. The changes of the peaks are different for different photosensitive fiber. Those properties have broad application foreground in fiber sensors and tunable filters.

分别从理论和实验上对长周期光栅的折射率特性以及光纤包层半径对长周期光栅特性的影响进行了研究，首次给出了描述光纤包层半径腐蚀和外界折射率改变与长周期光栅共振波长关系的理论表达式，实验与理论和数据模拟的结果很好符合，利用腐蚀光纤包层的方法可以有效地提高LPG的折射率灵敏度；对不同光纤中写入的长周期光栅的弯曲特性进行了实验研究，LPG的透射峰形状及其中心波长随光纤弯曲而发生变化，并且随着弯曲将在短波方向出现新的透射峰，其透射峰的变化规律因所用光敏光纤的不同而不同，这一特性在光纤传感和可调谐滤波器方面有重要的应用前景。

A single-longitudinal mode fiber laser with fiber saturable absorber is designed. Tunable fiber Bragg grating as the wavelength selector is in the ring cavity with a 2 m-long unpumped erbium-doped fiber.

设计了一种基于光纤饱和吸收效应的环形单纵模光纤激光器结构，以可调谐光纤布拉格光栅作为波长选择器件，与2 m未抽运掺铒光纤一起位于环形腔反射臂上。

By cascading a delay interferometer as a comb filter with a tunable bandpass filter,and employing a saturable absorber formed by a unpumped polarization-maintaining EDF to select the single-longitudinal-mode of the laser, a stable wavelength-tunabledual-wavelength single-longitudinal-mode fiber laser is demonstrated.

4将梳状滤波的延迟干涉仪与可调带通滤波器进行级联，用未泵浦的保偏掺铒光纤饱和吸收体进行单纵模滤波，获得了波长可调的双波长单纵模掺铒光纤环形激光器。

To realize single longitudinal-mode of the fiber laser, a ring configuration is devised. The single longitudinal-mode operation is realized by using a fiber Bragg grating as wavelength-selective element and a unpumped 2m-loog erbium-doped fiber which can produce stading-wave saturation effects in the cavity, Its tunable wavelength range is 42 nm, the output power is more than 3.5 dBm and the stability is less than ±0.005 dB.

为了实现光纤激光的单纵模，提出了一种环形腔结构，采用可调谐光纤Bragg光栅作为波长选择器件，与2m未抽运掺Er光纤产生驻波饱和效应，在1.55m波长处形成42nm激光输出，输出功率大于3.5dBm，功率稳定性优于士0.005dB。

A dual modulus PLL synthesizer is adopted to produce the radio-frequency generator operating between 38MHz and 150MHz, which is power amplified to drive the acousto-optic tunable filter to implement wavelength scanning of diffracting beam.

射频信号源采用双模锁相环频率合成技术，实现了在38MHz-150MHz范围内的频率输出，其经功率放大电路后驱动AOTF来实现衍射光的波长扫描控制。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。