ORS
超高安定レーザー

MENLO Ultrastable Laser Systems ORS 3w

Specifications

主な機能と利点

  • 究極の性能を追求した最高級のシステム
  • 究極の低位相雑音と周波数安定性を実現
  • 移動が容易 (機械式輸送ロック)
  • 幅広い波長帯域と豊富なオプションでカスタマイズ可能
  • 堅牢で優れた設計の19インチラックシステム(モニター・制御システム、防振台を含む)
  • レーザーロック自動化—24時間365日動作
  ORS
波長 500–1600 nm (IBSコーティング), 900–1600 nm (結晶コーティング)
安定性 (1秒におけるMADEV、直線ドリフト除去) <7 x 10-16 (FS-XTALオプションの場合)
<1 x 10-15 (FS-IBSオプションの場合)
<2 x 10-15 (ULE-IBS、標準システムの場合)
線幅 <1 Hz
位相雑音 (レーザー光源に依存)

                           ULE-IBS            FS-XTAL

at     10 Hz        -7 dBc/Hz         -13 dBc/Hz
at   100 Hz      -47 dBc/Hz         -47 dBc/Hz
at 1000 Hz      -70 dBc/Hz         -70 dBc/Hz            

For all Models Spurious Signals <-20 dBc

出力 >10 mW (FC/APCコネクタ)、高出力化についてはお問い合わせください。
共振器スペーサー 12.1 cm、ULE、円筒形
自由スペクトル領域 1.24 GHz
直線ドリフトレート 約150 mHz/s
振動絶縁プラットフォーム 内蔵

 

Description

当社の光周波数基準システム (ORS)は妥協の無い性能を目指して設計されています。超狭線幅のレーザー光と優れた周波数安定性を実現しています。

システムの中核を担っているのは高フィネスのファブリーペロー共振器(長さ12,1 cmの円筒形スペーサー)で、連続発振型レーザーの周波数基準として機能します。この共振器は超低膨張ガラス(ULE)で構成されており、熱膨張がゼロとなる真空中で動作します。共振器にはアクティブ除震およびアクティブ防音機能が備わっており、実験室の過酷な環境下でも最高の性能を達成できます。使いやすい共振器ロック構造により、光路を再調整することなく移動させることが可能です。

本システムはMenlo Systemsが独自に開発した最新世代のSYNCROコントローラで動作します。SYNCROコントローラは汎用性が高く、直感的に仕様出来るように設計されたモジュール式の電子機器プラットフォームです。低雑音のレーザードライバーや超高速(アナログ)サーボループなど、レーザー周波数安定化に必要なエレクトロニクスを全て格納しています。7インチのフロントパネルのタッチスクリーン、または遠隔PCのGUIにより全てのパラメータをコントロールできます。搭載されているソフトウェアにより自動共振器ロックとシステムモニタリングを行えます。 

ORSシステムのデモの様子をこちらからご覧ください:

Options

  • Crystalline Mirror Coating Package

    Product Code: ORS-FS-XTAL

    For ultimate frequency stability, the ORS-FS-XTAL Option is indispensable. Here, highly reflective crystalline coatings (available above 900 nm) are used on fused silica substrates as cavity mirrors. This strongly reduces the thermal noise floor. In addition, the intracavity power is actively stabilized with feedback to an AOM.

  • Fused Silica Mirror Substrate Package

    Product Code: ORS-FS-IBS

    The Fused Silica Mirror Substrate Package is an economic solution to reduce the thermal noise floor. Here, fused silica mirror substrates are used instead of ULE substrates. In addition, the intracavity power is actively stabilized with feedback to an AOM.

  • AOM Frequency Shift Package

    Product Code: ORS-AOM-FSH

    The ORS can be tuned over tens of picometers in steps of the free spectral range. To reach a specific frequency in-between these discrete steps (e.g., the Strontium transition at 698 nm), an additional noise-free frequency shift is applied using acousto-optic modulator. The AOM Frequency Shift package provides the precise output at the desired frequency for the ORS.

  • EOM Sideband Lock Package

    Product Code: ORS-EOM-SBL

    The EOM Sideband Lock Package provides a broadly tunable, ultrastable laser output. Here, an electro-optical modulator (EOM) is used to generate sidebands on the laser light that is sent to the cavity. Subsequently, a modulation sideband is coupled into the reference cavity, while the carrier is used as a frequency tunable, ultrastable user output. A tuning of up to half of the free spectral range is possible.

  • Fiber Noise Cancellation Package

    Product Code: ORS-FNC

    For transmission of sub-Hz linewidth laser light for more than a few meters, we recommend active phase noise compensation of the ultrastable output. The ORS-FNC interferometrically detects the phase noise induced by temperature variations and vibrations in the fiber and actively compensates this using a phase-locked loop and an AOM as actuator. The residual noise contribution of such a stabilized fiber link is well below the frequency stability of the ORS.

  • Mirror Coatings for Multiple Wavelengths Package

    Product Code: ORS-MWL

    For simultaneous stabilization of multiple lasers to the same reference cavity, we provide customized cavity mirrors. These custom coatings are highly reflective in two or multiple wavelength ranges.

  • Second Harmonic Generation Package

    Product Code: ORS-SHG

    It can be advantageous to realize an ultrastable laser system at a longer wavelength and frequency double its output using the ORS-SHG package (e.g., at 1397 nm for the Strontium clock transition at 698 nm). Frequency doubling can be integrated into your system with free-space or fiber-coupled output.

  • High Output Power Package

    Product Code: ORS-FA, ORS-TA

    Higher output power levels can be reached using low noise fiber amplifiers (ORS-FA) or semiconductor optical amplifiers with a tapered geometry (ORS-TA). When amplifiers are being used, they are placed within the frequency stabilization servo loop and thus merely affect the system’s stability.

  • Cavity de-Drifting Package

    Product Code: ORS-DDRIFT

    The inevitable shrinking drift of the reference cavity can partially be pre-compensated using a software-based scheme in conjunction with an AOM. If the system is equipped with a package that includes an AOM (ORS-FNC, ORS-AOM-FSH or FS substrates) de-drifting can also be realized via this AOM.

  • Digital Servo Interface for Stabilization to External Atomic Transition Package

    Product Code: ORS-DSRV

    We provide a digital interface with which the frequency of the ultrastable output can be stabilized to an external clock transition. The user supplies a frequency error reading and the SYNCRO control platform integrates this and feeds back to an AOM in order to stabilize the laser to the external reference. If the system is equipped with a package that includes an AOM (ORS-FNC, ORS-AOM-FSH or FS substrates) stabilization to an external transition can also be realized via this AOM.

  • General information

    Electronic modules that come with an extension package typically slide into Menlo Systems SYNCRO control platform. This guarantees smooth integration into the existing hardware and software infrastructure.

安定性と位相雑音

 Stab ORS FS XTAL Cyl 1542nm

PN ORS FS XTAL Cyl 1542nm v2

Menlo Expert Sandra de Vega 2021
Dr. Sandra de Vega
Your direct line to our expert
s.devega@menlosystems.com

Data sheets

Ordering information

  • Product Code
  • ORS

Headquarters
sales@menlosystems.com
+49 89 189166 0

Menlo Systems, Inc.
ussales@menlosystems.com
+1 973 300 4490

Feedback? Click here