TEC-420 放大的Littman/Metcalf系列

Tec-420放大的Littman/Metcalf激光器系统包含了一个被TEC-400锥形放大级放大的TEC-500 Littman/Metcalf 主激光器。

应用

光谱和光学过程控制

产生太赫兹的种子激光器

光学冷却和光捏

绝对距离干涉

激光器和OPO种子光

非线性光学过程

TEC-420 Amplified Littman/Metcalf Series

US Patent 5,867,512 | US Patent 6,297,066 | US Patent 6,869,483 | US Patents pending

Description:
The TEC-420 Amplified Littman Laser System consists of a TEC-500 Littman/Metcalf master laser amplified by a TEC-400 tapered amplifier stage up to 500 .. 2500mW. It takes advantage of the beam-walk free wavelength tuning of the Littman/Metcalf design which is required for a stable amplification stage.

Wavelength

• from 670nm to 1180nm

High optical power

• output power up to 2500mW
• excellent quantum efficiency
• high fiber coupling efficiency

Excellent tuning behavior

• use of in-house anti-reflection coated laser diode
• fine tuning via piezo actuator with a resolution better than 10MHz
• manual coarse tuning up to 30nm at 780nm or 830nm
• large mode-hop free tuning range of up to 100GHz and more

Narrow linewidth

• linewidth < 300kHz
• excellent side mode suppression > 50dB

Excellent frequency locking performance

• high resonance free piezo modulation
• high frequency laser current modulation
• excellent temperature stability
• low acoustic susceptibility
• excellent locking stability

High flexibility

• free beam and fiber coupled versions available
• motorized master Littman / Metcalf laser with automated wavelength scans via remote software
• constant current and constant power operation modes (optional)
• excellent laser performance and frequency stability)

Plug & Play configuration

• modular laser system design
• automated piezo tuning with power read-out
• remote control via GPIB, RS232 and USB

Application

• Spectroscopy and optical process control
• Seed laser for THz generation
• Optical cooling and trapping, BEC
• Absolute distance interferometry
• Laser and OPO seeding
• Non-linear optical processes

Technical Details

TEC-420 Amplified Littman/Metcalf Series

The TEC-420 Amplified Littman System is an easy to use diode laser system with a Littman/Metcalf master laser and a Tapered amplifier stage. The emitted light is decoupled via a 60dB isolator (not shown in the schematic drawing) before entering the tapered amplifier. The tapered amplifier diode is both side antireflection coated. A two stage collimating optics gurantees an almost diffraction limited beam quality characterized by a M² < 1.7 .

Benefit of AR-Coated diode lasers, System Performance:
The quality of our anti-reflection coatings guarantees the performance of the Littman / Metcalf master laser as well as the quality of the tapered amplifier diode. 

Below is a simplified drawing of the configuration

Single-mode fiber coupling option

Due to the excellent mechanical stability of our Littrow laser system, we are able to perform high efficiency fiber coupling with coupling efficiencies between 40% and 70% into single mode polarization maintaining optical fibers.

Motorized Littman Master Amplifier System

Sacher Lasertechnik has realized a motorized Master Littman laser which provides automated scans via remote control software.

Wavelength scan

Specifications

Model	Wavelength Regime	Power	Tuning Total	Tuning Mode-hop Free	Application
TEC-420-0670-0500	662-678nm	500mW	8nm	30GHz	Lithium  Argon
TEC-420-0735-0500	730-740nm	500mW	15nm	30GHz
TEC-420-0770-1500	752-772nm	1500mW	15nm	60GHz	Oxigen Potassium
TEC-420-0780-1000	770-785nm	1000mW	15nm	60GHz	Rubidium
TEC-420-0780-2500	770-789nm	2500mW	15nm	60GHz	Rubidium
TEC-420-0795-1500	790-810nm	500mW	15nm	30GHz	Rubidium SHG
TEC-420-0830-1000	820-840nm	500mW	20nm	60GHz	Xenon SHG
TEC-420-0850-1000	840-852nm	1000mW	20nm	60GHz	Caesium SHG
TEC-420-0915-1500	890-940nm	1500mW	30nm	60GHz	Caesium SHG
TEC-420-0960-1500	950-985nm	1500mW	30nm	60GHz	Water BTX, SHG
TEC-420-1020-0500	980-1040nm	500mW	40nm	60GHz	SHG
TEC-420-1060-0500	1040-1080nm	500mW	40nm	60GHz	SHG, YAG Seeding
TEC-420-1060-1500	1040-1080nm	1500mW	40nm	60GHz	SHG, YAG Seeding
TEC-420-1080-0500	1070-1120nm	500mW	30nm	30GHz	Helium

General Specifications:

Output Power	500mW .. 3000mW
Wavelength	735nm .. 1120nm
Linewidth (50ms)	< 0.5MHz, typ. 0.3MHz
Linewidth (20s)	<    5MHz, typ.   2MHz
Long Term Drift (24h)	typical 300MHz
Side mode suppression	> 40dB, typical 45 dB
Beam Waist (2w)	2.5 x 2.5mm .. 3.0 x 1.5mm
Beam Divergence	< 2mrad
Beam Quality M²	M² < 1.7
Coarse Tuning Range	10nm .. 40nm
Fine Tuning (total / mode-hop-free)	250GHz / 30GHz .. 100GHz
Polarization	Linearly > 100:1
Laser Head Dimensions	210 x 100 x 307mm