
Image-plane hologram recording
L: laser
K: exposure shutter 
BS: beam splitter 
M1/M2: mirror 
L1/L2: expander 
L3: imaging lens 
O: object 
H: hologram

One-step rainbow hologram recording
L: laser
K: exposure shutter 
BS: beam splitter 
M: mirror 
L1/L3: expander 
L2/L4: collimator 
L5: imaging lens 
O: object 
G: slit 
H: hologram 

Two-step rainbow hologram recording
L: laser
K: exposure shutter 
M1/M2/M3: mirror 
BS: beam splitter 
L1/L2: expander 
L3: collimator 
L4: imaging lens 
G: slit 
H1: Fresnel hologram 
H2: holographic plate
Note: stainless steel optical table or breadboard not provided
Features
Room-light operation
White-light reconstruction
Photopolymer plate for easy and fast developing
Rainbow hologram
40-mW semiconductor laser as light source
Digital display with manual or remote controlled shutter operation
Detailed instructional manual
Introduction
The LEOK-64 Hologram Recording Under Room Light kit is designed to enable students to record and develop holograms under normal room light, a significant advancement over traditional methods that require darkroom conditions. This is achieved using a photopolymer plate, which allows for white-light reconstruction of holograms with high diffraction efficiency. The advantage of this technique is the ability to perform holographic experiments in a convenient environment, while still achieving clear and high-quality holographic reconstructions.
This kit is particularly useful for educational purposes, as it simplifies the process of recording and developing holograms, making it easier for students to explore and understand holography without the need for a darkroom. With its white-light reconstruction, students can observe the 3D images clearly and easily, facilitating a deeper understanding of the principles behind holography.
The instruction manual contains comprehensive materials including experimental configurations, principles, step-by-step instructions, and required parts. Please click to view some sample pages of the instruction manual.
This kit can be used to conduct the following experiments:
1. Fresnel (transmissive) holography
2. Reflective holography
3. Image plane holography
4. Two-step rainbow holography
5. One-step rainbow holography
Specifications
| Item | Specifications | 
Semiconductor Laser  | Center Wavelength: 650 nm | 
| Bandwidth < 0.2 nm | |
| Power: 40 mW | |
| Laser Safety Goggles | OD ~1 from 600 nm to 700 nm | 
Exposure Shutter and Timer  | 0.1 ~ 999.9 s | 
| Mode: B-Gate, T-Gate, Timing, and Open | |
| Operation: Manual Control | |
| Continuous Ratio Beam Splitter | T/R Ratio Continuously Adjustable | 
| Fixed Ratio Beam Splitter | 5:5 and 7:3 | 
| Holographic Plate | Red Sensitive Photopolymer Plate | 
Part List
| Description | Qty | 
| Semiconductor laser (LLL-1) | 1 | 
| Laser safety goggles | 1 | 
| Semiconductor laser Holder | 1 | 
| Exposure shutter and timer (LEPO-30) | 1 | 
| Fixed ratio beam splitter | 5:5 & 7:3 (1 each) | 
| Photopolymer holographic plates | 1 box (12 sheets, 90 mm x 240 mm per sheet) | 
| Plate holder (SZ-12 & SZ-12B) | 1 each | 
| Tri-color safety lamp | 1 | 
| Lens | f=4.5 mm, 6.2 mm (1 each) and 150 mm (2 pcs) | 
| Plane mirror | 3 | 
| Universal magnetic base (SZ-04) | 10 | 
| Continuously variable beam splitter | 1 | 
| Lens holder (SZ-08) | 2 | 
| Two-axis adjustable holder (SZ-07) | 6 | 
| Sample stage (SZ-20) | 1 | 
| Small object | 1 | 
| Electric blower | 1 | 
| Ground glass | 1 | 
| Small white screen | 1 | 
| Z translation on magnetic base (SZ-03) | 2 | 
| XY translation on magnetic base (SZ-02) | 1 | 
| Illuminometer | 1 | 
| Slit screen | 1 | 
Note: a stainless steel optical table or breadboard (600 mm x 600 mm) with optimal damping is needed for use with this kit.

Image-plane hologram recording
L: laser
K: exposure shutter 
BS: beam splitter 
M1/M2: mirror 
L1/L2: expander 
L3: imaging lens 
O: object 
H: hologram

One-step rainbow hologram recording
L: laser
K: exposure shutter 
BS: beam splitter 
M: mirror 
L1/L3: expander 
L2/L4: collimator 
L5: imaging lens 
O: object 
G: slit 
H: hologram 

Two-step rainbow hologram recording
L: laser
K: exposure shutter 
M1/M2/M3: mirror 
BS: beam splitter 
L1/L2: expander 
L3: collimator 
L4: imaging lens 
G: slit 
H1: Fresnel hologram 
H2: holographic plate