FC1500-ULNplus
光学频率梳

Specifications

先进的功能和优点

- - - - 梳齿间距250 MHz
      - 精度1 x 10 ^-18（τ> 100 s）
      - 稳定性：5×10 ^-18在1秒，5×10 ^-19在1000秒
      - 工作范围从500 nm到2μm
      - [1Hz-2 MHz]的积分相位噪声<80 mrad
      - 高重复频率
      - > 1 MHz高带宽执行器，用于CEO和重复率
      - 全光纤耦合的CEO频率生成
      - 一站式计量系统，完全自动化包括数据分析软件，为连续运行而设计

FC1500-ULN^plus
梳齿间距	250 MHz
相对精度	1 x 10^-18 for τ > 100s*
相对稳定度	5 x 10^-18 in 1s▴, 5 x 10^-19 in 1000 s▴
积分相位噪声	<80 mrad [1Hz - 2 MHz]
线宽	<1Hz^*
梳齿间距的调整范围	>2 MHz
CEO调整范围	>250 MHz
激光输出	五个光纤耦合、线偏振、PM输出端口
中心波长	1560 nm
光谱范围	> 25 nm（选配M-VIS时为500-1050 nm，选配M-NIR时为1050-2100 nm）
平均输出功率	每个激光端口 > 12 mW（选配M-VIS时 > 60 mW；选配M-NIR时 > 200 mW）

*锁相到光学参考，▴修正的艾伦偏差（λ型计数器，时基1ms)

**受限于谱仪分辨率带宽

Description

Menlo Systems FC1500-ULN^plus超低噪声光频梳是光钟的频率测量理想

“发条”。Menlo Systems 的全保偏figure9^®模式锁定技术结合宽带激励元件

(>1MHz)支持载波包络偏移频率（CEO）和重复频率的锁定以确保系统最佳性

能。随着对时间和频率稳定度和精度需求不断增长，对晶振单元和频率参考

的改进尤为必要。现今，稳定度最高的光钟依赖于窄带光学跃迁作为“晶振”以

及作为“发条”的光学频率梳。通过将两个独立的FC1500-ULN^plus在相位锁

定环外进行比对已证实，FC1500-ULN^plus能够完全支持当今具有最高精度和稳定度

光钟系统。光梳-光梳比对作为出厂测试一个常规环节，成为每个系统在出厂验收期间质检

的重要组成部分，确保将振荡器的光谱纯度完美复制到客户所需波长处。

Options

M-Mid-IR Extension Package

Product Code: M-Mid-IR
Extends the stabilized comb spectrum to 3.3µm with more than 200nm spectral width and > 120 mW average power via a free-space output port.
M-NIR Extension Package

Product Code: M-NIR

Extends the stabilized comb spectrum to a range of 1050 - 2100 nm with free-space output port and >200 mW average power. The measurement port can be optimized independently from the CEO frequency stabilization.
M-VIS Extension Package

Product Code: M-VIS
Extends the stabilized comb spectrum to the 500-1050 nm range with free-space output port and >100 mW average power.
HMP High Power Measuring Port

Product Code: HMP

Provides stabilized comb light with highest power at customer-defined wavelengths for high precision measurement of lasers with low power levels (<100 µW). A minimum of 3 mW average power in a 3 nm window is provided at the central wavelength specified by customer. Available for 1050 - 2100 nm (HMP-NIR), or 525 - 1050 nm (HMP-VIS). The output is fiber coupled and optional available as free space.

For 390 - 400 nm (HMP-UV) a minimum of 1 mW average power in a 1 nm window is provided. the output is free space.
P250 PM PULSE EDFA Erbium-doped Fiber Amplifier

Product Code: P250 PM PULSE EDFA

All polarization maintaining (PM) amplifier delivers intense near infrared pulses with >350 mW at 1560 nm. Several amplifiers can be added for multiple measurement ports.
M-780 High Power Measuring Port at 780 nm

Product Code: M-780

Output provides stabilized comb light with highest power at 780 nm.
Contains an amplifier and subsequent frequency conversion, delivering a minimum of 150 mW average power with a central wavalength in the range of 780-800 nm. The output is free space and optional available as fiber-coupled.
BDU Beat Detection Unit

Product Code: BDU

Generates and measures the beat signal between the frequency comb and an external continuous wave (cw) laser. Available for various spectral ranges, with free space or fiber-coupled optics, and matched to the customer's laser.

For more information: BDU
LLE-SYNCRO Laser Locking Electronics

Product Code: LLE-SYNCRO

Allows locking of an external cw laser to the stabilized frequency comb. Performance has been field tested with lasers from major suppliers.

For more information: LLE-SYNCRO
Microwave Ultrastable RF Output

Product Code: Microwave

Ultrastable RF output in the 1 MHz-10 GHz range. Utilizing a high-sensitive fast photodetector and a frequency divider where needed.
ORS Optical Reference System

Product Code: ORS
The ORS Optical Reference System consist of a CW laser locked to a stable high-finesse optical reference cavity made of ultra-low expansion (ULE) glass. It offers ultra-narrow linewidth (< 1Hz) and outstanding short time stability (<2 x 10^-15) at wavelengths such as 657 nm, 689 nm, 698 nm, 729 nm, and many others from 500 nm to 1600 nm. By locking the FC1500-250-ULN to the ORS, the purity of this state-of-the-art optical reference can be transferred throughout the entire frequency comb spectrum.
For more information: ORS

Analysis of the out of loop beat signal between two ULN^plus combs at the Strontium clock transition frequency: The extremely low phase noise proves that the spectral purity is transfered to the target wavelength, which makes the ULN^plus a unique clockwork for Strontium and other optical lattice clocks.

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