2123 4th St., Berkeley, CA 94710 Ph#: 510-644-1869, Fx#: 510-644-0118
e-mail: sales@femtochrome.com;
http: www.femtochrome.com

FR-103MC AUTOCORRELATOR

Specifications
Sensitivity (PavPpk)min :10-4W2
Resolution: ~ 1fs
Scan Range: > 50 ps
Wavelength Range: 200–3400nm
Interferometric
Polarization Insensitive*
Free-Space/Fiber-Coupled (/FA)
Computer Interface
Any pulse rep rate > 4Hz (w/CDA)*

Vertical polarization provides higher
R/T ratio w/ pellicle beamsplitter

The FR-103MC is a low cost, palm-size interferometric Autocorrelator utilizing TPC (Two PhotonConductivity). Its collinear Michelson interferometer geometry yields interferometric autocorrelations.
Ideal for OEM applications, the FR-103MC is suitable for a pulsewidth range of 5fs – 15ps. It is easyto-use with good sensitivity and excellent resolution.
Optional Fiber Adapter (/FA) renders the FR-103MC alignment free for FC fiber-coupled inputs.
It can be supplied with the Computer Data Acquisition (/CDA) option, for the display andanalysis of autocorrelation traces on a PC.

The FR-103MC works with any input pulse rep rate >4Hz with the /SSO and /CDA options.
(The standard version is suitable for any pulse rep rate >500Hz.)DISPERSION-FREE, HIGH RESOLUTION

Dispersion is negligible in the FR-103MC. Using high reflective metallic-coated optics [the onlytransmissive element is an ultrathin (<1um) pellicle beamsplitter], an unprecedented resolution of ~1fs
is attained.
With its high resolution, the FR-103MC is capable of measuring pulsewidths as low as ~ 5fs.

ROTATING PARALLEL (//) MIRROR ASSEMBLY

Rapid scan, periodic optical delay is introducedby means of a parallel (//) mirror assembly.*
This unique mechanism results in uniform anderror-free delay generation with interferometricresolution.

______________________________________*

Z.A.Yasa and N.M.Amer, Optics Commun., V36, 406 (1981).

NONLINEAR PHOTOSENSOR MODULESThe NL detector module selections for the FR-103MC are:/200 -► 200-300nm/300 -► 300-400nm/400
400-700nm/700
700-1200nm/1200
1200-2200nm/2200
2200-3400nm
SLOW SCAN OPERATION

There are two modes of operation for the delay generating // mirrors of the FR-103MC:
1. Uniform rotation ( with a refresh rate typically >2Hz)
2. Controlled movement such that the // mirrors slow down greatly (4 selectable speeds ) over a period
when the pulses on the two arms of the Michelson Interferometer set up are overlapping. The// mirror assembly speeds up beyond this range, to return quickly, for a repetition of the cycle.

Whereas the uniformly rotating // mirrors mode is suitable for typically > 100kHz rep rate lasers, thelatter mode renders the FR-103MC suitable for 'real-time' autocorrelation for any rep rate > 500Hz.
This is particularly useful for kHz amplified lasers.

Fringe resolved trace of a 450fs pulse at 1552nm, w/FR-103MC operated in the SS/SP3 mode.

FIBER ADAPTER OPTION (/FA)
An optional gimbal mount with a collimator can be installed over the variable input aperture of the FR103MC, for easy connection of fiber-coupled beams. Factory aligned, repeated connections without aneed for realignment is facilitated. The /FA is easily removable for a free-space input beam. Its
standard adapter is FC [FC/PC or FC/APC]. For operation at 1550nm, a PM-DSF patchcord can be
attached to the /FA. The collimator of the /FA is focus adjustable to obtain good collimation if its use at
greatly different wavelengths is needed. A ƛ/2 plate holder is also provided within the /FA assembly,
for the user to install one for his wavelength of operation, if needed for polarization control.
COMPUTER DATA ACQUISITION (/CDA)
A data acquisition board installed in the FR-103MC/CDA provides a USB interface with a Windows
PC. Its associated software allows traces to be displayed, analyzed [averaged and/orfit with typical pulseshapes (Gaussian and Sech2)] or saved.

SPECIFICATIONS:* Resolution: ~ 1fs* Scan Range: > 50ps
* Sensitivity: [PavPpk]min=10-4W2* Wavelength Range: 200-3400nm* Interferometric* Polarization insensitive** Any rep rate > 4Hz (w/CDA)* Free space/ Fiber coupled (/FA)* Computer Interface (/CDA)*Vertical polarization yields higher signal due
to better R/T ratio w/ pellicle beamsplitter

2123 4th Street, Berkeley, CA 94710 Ph#: 510-644-1869, Fx#: 510-644-0118
e-mail: sales@femtochrome.com;
http: www.femtochrome.com